Answer: The primary threats currently facing blue whales are vessel strikes and entanglements in fishing gear .Also illegal hunting.
Explanation:
Answer:
Blue whales were significantly depleted by commercial whaling activities worldwide. The latest stock assessments of blue whales include data for various stocks, including areas of the North Pacific and western North Atlantic Oceans.
Whaling killed hundreds of thousands of blue whales from the early 1900s until it became illegal in 1966. Blue whales continue to be threatened by boats, anthropogenic noise, pollution with toxic chemicals, climate change (which may affect how the population of krill), and from fishing.
How can we prevent blue whales from extinction?
Adopt. Adopt a whale and help us protect these amazing creatures.
Join. You can join our team and help us save whales and dolphins.
Donate. Your gifts help us take action for whales and dolphins.
Shop. Support WDC by shopping for yourself or a friend.
Hope this helps. Thanks!
Select the correct answer.
Kate is studying the transformation from unicellular to multicellular organisms. Which metaphor is the most appropriate to apply to the map of the timeline?
A.
the "food chain"
B.
the "circle of life"
C.
the "tree of life"
D.
the "biological ladder"
Answer:
Option D, the "biological ladder"
Explanation:
The food chain is the network of organism in which all are dependent on each other for their food, energy source and survival.
The circle of life depicts the time frame starting from origin of a life form till its death and the intermediate stages.
The tree of life basically determines which organism has evolved from which other organisms.
The biological ladder represents the development of species from simple form to a much complex form.
Hence, option D is the right metaphor
Answer:
Explanation:
C
In his analysis of different species’ DNA, E.Chargaff discovered the base-pairing rules of DNA.
1.) Chargaff’s rules state: The amount of adenine is equal to ? and the amount of cytosine is equal to ? .
2.) if a sample of jellyfish DNA is 14% cyotsine, approximately how much adenine would there be in that same sample? Show your work.
Answer:
1. Thymine, Guanine
2. 36% Adenine
Explanation:
1. Edwin Chargaff, who proposed the complementary base pairing rule, stated in his rule that the amount of purine bases (Adenine and Guanine) is equal to the amount of Pyrimidine bases (Cytosine and Thymine). This means that, in a DNA molecule, the amount of adenine is always equal to Thymine (A=T) and the amount of Cytosine is equal to Guanine (G=C).
Also, the total amount of the four nucleotide bases that make up a DNA molecule is equal to 1 or 100% i.e. A+T+G+C= 100%
2. Based on the rule above, if a sample of jelly fish DNA contains 14% Cytosine, the amount of its complementary pair (Guanine) will also be 14%.
Hence, Cytosine and Guanine will collectively occupy 14+14=28% of the DNA.
To find the amount of the other two bases i.e. Adenine and Thymine, we subtract 28% from 100%
That is, 100 - 28 = 72%
If both Adenine and Thymine contains 72% and each must be equal, we divide 72% by 2 to get the amount of each.
Hence, 72/2 = 36% of Adenine and 36% of Thymine.
According to the question, Adenine will contain 36% in the Jellyfish DNA.
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar. Any animal that eats the plants can convert the sugar into the energy it needs to move from place to place. Which three types of energy are involved in this example?
Answer:
Solar energy, Chemical energy and Mechanical energy
Explanation:
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar:
The type of energy utilized here is solar energy. The energy from sunlight which is the solar energy is captured by the chlorophyll in plants enabling them use water and carbon dioxide to produce their own food.
Any animal that eats the plants can convert the sugar into the energy it needs to move from place to place.
The energy from the sun which is the solar energy is converted into chemical energy, and the animal that eats this plants gains some of this energy and converts it to mechanical energy, the energy needed to do work: motion energy e.g. moving from place to place.
Answer:
Light energy from sun
Chemical energy
Kinetic energy.
Explanation:
Light energy is gotten from sunlight which is use with carbondioxide and water to produce sugars.
The chemical energy is the substance that undergo chemical reaction to produce another substance. The light energy cause a chemical reaction that breaks carbondioxide molecules and water to produce sugars.
After the animal eat the food, it's get chemical energy and it's is converted to kinetic energy for movement.
Kinetic energy is the energy posses by a body in motion.
What is the mutation caused by the addition of a nucleotide to an already existing gene sequence called?
A. deletion
B. duplication
C. insertion
D. inversion
Answer:
B croe
Explanation:
When DNA is copied, sometimes a new, incorrect, base pairing appears within the structure of a new DNA molecule replacing original base pairs. This mistake is called a base-pair ______________.
Question 54 options:
Deletion
Insertion
Point
Duplication
How is climate change like a game of Tetris? How can kids stop climate change? What are some of the ways that you will help?
Answer:
Climate change is like a game of Tetris because a lot of little things add up to it. you don't fill up the screen in Tetris in one move, small things build up over time.
Kids can stop climate change by being environmentally conscious and making an effort to reduce the size of their carbon footprints. They can choose to take public transportation instead of driving to school, they can take colder or shorter showers, and they can reduce their waste by using reusable bags at the grocery store or reusable cups instead of throw aways.
Some of the ways that i will help is by bringing my own reusable cup next time i get a soda at the gas station and taking shorter showers.
Explanation:
you can say whatever you want for the last part i know gas station dews aren't everyone's thing.
to determine
(1) The scientist placed a white laboratory rat in the pparatus
how quickly the rat could find its way out.
that the rat was
(2) From his observations, the scientist could _dcoule
able to learn the correct route in the maze.
(3) If you
your time wisely, you will finish your work more quickly.
(4) The sky was filled with
black clouds.
before he melted it.
(5) In the lab the scientist placed gold in a
(6)
in his white lab coat, the scientist resembled a physician.
(7) The scientist determined that the unknown metal possessed
because it could be hammered into a thin sheet.
(8) The unknown metal did not possess
because it could not be
drawn out into a wire.
(9) For centuries, men have searched for an
that would change
lead to gold.
(10) The
possessions we have on Earth will not retain their value
in Heaven.
(11) Our group, which includes people of many different races, is a
one.
(12) After assembling all the
Answer the question
Explain how the percentages of nitrogen, oxygen and carbon dioxide in the Earth’s atmosphere today have changed from the Earth’s early atmosphere.
Explanation:
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
Earth has its own atmosphere which is made up of various gaseous such as carbon dioxide, water vapour, oxygen and etc
There are various activities that change the composition of the earth atmosphere.
DeforestationExcessive use of fossils fuelEmission of carbon dioxideThe earth atmosphere has 78 per cent nitrogen, 21 per cent oxygen, 0.9 per cent argon, and 0.1 per cent other gases.
During the activities perform as mentioned the composition of the earth is changed and the amount of carbon dioxide is increased by 0.01 %.
For more information, refer to the link:-
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PLEASE HELP ME WITH THESE QUESTIONS! THE BEST ANSWER I WILL GIVE BRAINIEST
WORD BANK: Solar system, Galaxy, Eclipses, Universe, Orbit,
Axis, Differential, Cyclic pattern, Seasons
1. ____________________ The invisible line through Earth that runs from the north pole to the
south pole and is the center of Earth's rotation.
2. ____________________ A phenomenon or process that involves several repeating parts.
3. ____________________ Caused by the tilt of Earth as it revolves around the Sun and based
on changes in temperature due to the different amounts of sunlight.
4. ____________________ Comprised of planets and any other celestial objects that orbit a sun.
5. ____________________ A partial or full obscuring of light on an object by the passage of a
between a celestial body and the observer or between the celestial body and its source of
illumination.
6. ____________________ Relating to quantitative variances.
8.E 5.9 Earth, Moon, Sun
Solar system Galaxy Eclipses Universe Orbit
Axis Differential Cyclic pattern Seasons
Answer:
Your answers are :
AxisCyclic patternSeasonsSolar system EclipsesDifferentialWhat mineral is in a salt shaker?
Answer: magnesium
Explanation:
Answer:
salt maybe
Explanation:magnesium is not the answer
Uranus is unique because it is the only planet
discovered by mathematical calculations
that rotates on its side
with an atmosphere
with rings
Answer:
rotates on it's side
Explanation:
which of the following cannot become plasma cells?
A. activated b cells phagocytes
B. activated b cells phagocytes and memory t cells
C. activated b cells lymphocytes
D. b cells
E. memory t cells
F. none
G. memory b cells
Answer: memory t cells
Explanation:
Which phrases describe both lakes and ponds? Check all that apply.
a. contain still, standing fresh water
b. have no plants growing at the bottom
c. formed by rainfall, melted snow and ice, or runoff
d. formed by lava or mud blocking a river
e. created by building a dam on a river
f. are shallow enough that sunlight reaches the bottom
Both lakes and ponds; contain still, standing fresh water and are formed by rainfall, melted snow and ice, or runoff. (A and C)
Good luck with science haha
Answer:
a and c
Explanation:
took the test
molecules that cut dna at specific sequences are known as
Answer:
Restriction enzyme, also called restriction endonuclease, a protein produced by bacteria that cleaves DNA at specific sites along the molecule
Explanation:
Hope it helps
Cardiac muscle is a type of muscle in the human body. Identify whether Cardiac muscle is more similar to smooth muscle or straited muscle. Provide two reasons to support your answer.
PLEASE, WILL MARK THE BRAINLIEST!!
Answer:
Cardiac muscle is striated
Explanation:
The organization of myofibrils into sarcomeres gives the cardiac muscle it he appearance of striation. The striations is caused by bands that are made up of the protein, actin. The darker bands are made of myosin.
Which of these is not a natural earth cycle?
rock
water
carbon
oil
Answer:
The answer is oil .
Explanation:
Oil is not a natural Earth cycle.
(Correct me if I am wrong)
Which events causes tides?
Answer:
The different moon phases affect the tides
Explanation:
Answer:
The interaction of the Moon, Sun and Earth.
Explanation:
_____ causes the body to need increasingly larger amounts of the
drug to get the same effect that was originally produced.
Explanation:
Drugs have different effects depending on the drug itself, the person taking it and their surroundings. Learn how your body processes drugs and about the short-term and long-term effects. Taking drugs can affect not just your physical and mental health, but your whole life. Just one pill can kill.
Which formations are created by wind deposition? Select two options.
spits
deltas
loess hills
kettle lakes
sand dunes
Answer:Loess Hills and Sand Dunes
Friend me!!!!
Explanation:Loess is made of silt that were wind blown from vertical cliffs.
Sand dunes are basically hills of sand. They form when wind is impeded by a rock and it drops some of the sand as it hits the rock. Slowly the deposited sand builds up to form bigger dunes.
Hills since sand dunes are hills also, this is also considered a formation made by wind deposition.
Answer:
I believe it is loess hills and sand dunes
make a claim about how related tuna, turtles, and chimpanzees are to humans. use evidence to support the claim and explain your reasoning
Answer:
Animals that form part of the tree of life
Explanation:
The tree of life is a diagram used in evolutionary biology to organize life into categories and to classify different species. In this case, tuna, turtles, and chimpanzees and humans are species that can be grouped in the animal category, within the vertebrates group (chordate phylum), being it the most inclusive level at which all these species belong.
In this lesson, you learned about the relationship between hypotheses, theories, and laws. You also learned how to identify examples of theories and laws, and to explain how theories may change over time. In this assignment, you will apply your knowledge of hypotheses, theories, and laws in a variety of tasks.
Answer:
beetlejuice beetlejuice beetlejuice
Explanation:
You could use a buddy
Don't you want a pal?
(Yes I do! Yes I do!)
Girl, the way I see it
Your daddy should be leavin'
And you should stick around
What?
Nothing
So, Lydia, don't end yourself
Defend yourself
Daddy is the one you should maim
Together we'll exterminate, assassinate
No
The finer points can wait
But first you gotta say my name
Go ahead and jump but that won't stop him
Here you got a solid plan B option
I can bring your daddy so much pain
All you gotta do is say my name
Girl, just say it three times in a row
Then you won't believe how far I'll go
I'm on the bench, but coach
Just put me in the game
All you gotta do is say my name
I don't know your name
Well, I can't say it
How 'bout a game of charades?
Yes, let's play it
Two words
Right
Second word
Uh-huh
Drink?
No
Beverage?
No
Wine?
No
Juice?
Yes
Okay
First word
Okay
Bug?
No
Ant?
Close, but no
Beetle?
Yes
Betelgeuse?
Wow, I'm impressed
And all you gotta do is say my name three times
Three times in a row it must be spoken
Unbroken
Ready?
Yeah
Okay, go
Betelgeuse
Yes
Betelgeuse
Yes
Beeeee
Oh, oh, this is gonna be so good
'Cause
What?
You're so smart
A stand-up bro
I'll think about your offer
Let you know
But I prefer my chances down below
Betelgeuse
Yes
Betelgeuse
Yes
Being young and female doesn't mean that I'm an easy mark
I've been swimming with piranhas
I don't need a shark
Yes, life sucks
But not that much
Okay, Betelgeuse
Betelgeuse
Be a doll and spare the lecture
I'm offering you a full-time specter
Are you any good?
You bet'cha
Trust me, baby
I just met ya
Really it's a flattering offer
Don't you wanna see dad suffer?
I think I'd rather just jump off
No
I may be suicidal
But Betelgeuse, it's not as if I've lost my mind
So, playing hardball, huh?
You are tougher than you look
Just wanna make sure I know who I'm working with
Got any references?
Lydia, there you are
Are you alright?
A-Dog, B-Town, my old pals
You get away from her
Lydia, this is a dangerously unstable individual
Betelgeuse is smexy
Betelgeuse is smart
BJ is a graduate of Juilliard!
He can help
We found him on Yelp
Our troubles all ended on the day that we befriended him
Every word is the truth
Betelgeuse, Betelgeuse, Betelgeuse
What the heck was that?
So violating
There you go, kid
Couple of five-star reviews
What was that?
That was possession
Any ghost can do that in less than one lesson
Any ghost?
Pretty much, any ghost'll do sure
Then, Betelgeuse, what do I need you for?
Woah, woah, woah woah woah
Hold up, hold up, girl, I'm your pal
They're sweet, but I'm a demon straight from Hell
I know, I went a little hard on the sell
But we're BF-F-F-F's forever
Agh
Lydia
What? He was already dead
And you heard what he said, any ghost can do that possession stuff
We don't need that demon
The three of us alone can wreck dad's evening
Together we can make a grown man weep
Guys, I got a dinner date to keep
Okay, so what's the plan?
Teach dad a lesson
He's gonna freak when we possess him
So he wants the perfect daughter
I'll lead that lamb to slaughter
Yeah, I got game
I'm gonna make him say my name
(Make him say your name)
I'll make him say my name
(Make him say your name)
I'll make him say my name
(Make him say your name)
Not running away
I'll make him say my name
Answer:
no otpions
real
Explanation:
scoopi doopi doo where r yuu we gonna slov a misery
Soil at the shore of Lake Erie in Pennsylvania has a high sand and gravel content. Which of the following is a characteristic of this type of soil?
A) extreme acidity
B) rapid water drainage
C) extensive producer biomass
D) significant depth before hitting bedrock
Answer:
rapid water drainage
Explanation:
These are example of granular (sand and gravel)soils.They are more permeable to water, and therefore can not retain water molecules.They are non-cohesive soil,with high strength and capacity to withstand slope.
High acidity is not a characteristic feature of soil with sand and gravel.In addition, such soil lacks biomass therefore can not support plant growth. The soil type is not a yardstick to determine the dept of soil type.Consequently, rapid water loss due to porosity is the best option.
Members of which of the following phyla have the most species that parasitize humans?
A. Porifera
B. Mollusca
C. Echinodermata
D. Platyhelminthes
Answer:
Platyhelminthes
Explanation:
4 pts
The United States banned chlorofluorocarbons in aerosol cans. These actions became a
global movement and let to an international agreement on the ban. Which environmental
concern were governments directly addressing by eliminating the use of
chlorofluorocarbons in aerosol cans?
Tim
Atte
40
Dependency of fossil fuels.
Melting of icecaps.
Salinity levels in the ocean.
Levels of stratospheric ozone.
Previous
Next >
Answer:
Impact as greenhouse gases
CFCs were phased out via the Montreal Protocol due to their part in ozone depletion. However, the atmospheric impacts of CFCs are not limited to their role as ozone-depleting chemicals.
Explanation:
Question 3
10 pts
How do adaptations benefit the organism? Select all that apply.
Find food
Catch prey
Survive harsh weather
Hide
Avoid predators
Answer:
adaptations help the organsims to survive harsh weather, to avoid predators, to hide.
What is the basic unit of structure and function in all living things?
Answer:
Cell
Explanation:
Although the strict definition of what is alive is still argued among scientists, most agree that the fundamental building block of life is a cell.
A cell is defined as a unit of living matter, with or without a nucleus, separated by a membrane and containing the usual suspects: proteins, carbohydrates, nucleic acids, and lipids.
Explain the production of monoclonal antibodies and give an example of how they are used.
PLEASE ANSWER MY QUESTION!
Answer:
Monoclonal antibodies (mAbs) are produced by introducing an antigen to a mouse and then fusing polyclonal B cells from the mouse's spleen to myeloma cells. The resulting hybridoma cells are cultured and continue to produce antibodies to the antigen.
Explanation:
An example of a monoclonal antibody is blinatumomab (Blincyto, Amgen), used to treat certain cancer, types of acute lymphocytic leukemia.
Great Elephant Census
Answer:
"The Great Elephant Census (the largest wildlife survey in history) was an African-wide census designed to provide accurate data about the number and distribution of African elephants by using standardized aerial surveys of hundreds of thousands of square miles or terrain in Africa.
Explanation:
"The final results from Great Elephant Census show 352,271 African savanna elephants in 18 countries, down 30% in seven years"
Describe what a food chain represents. It can be in a sentence or 2
Answer:
A food chain represents a series of events and consumption in which food and energy are consumed from one organism in an ecosystem to another. Food chains show how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposes such as fungi.
Explanation:
True-breeding pea plants have either spherical seeds or dented seeds with spherical being the dominant phenotype. A genetic cross between two F1-hybrid pea plants for spherical seeds will yield what percent of plants with a heterozygous genotype in the F2 generation?
A. 0%
B. 25%
C. 50%
D. 75%
A genetic cross between two F1-hybrid pea plants for spherical seeds will yield 50% of plants with a heterozygous genotype in the F2 generation. Thus, the correct option for this question is C.
What is a Genotype?A genotype may be defined as the ultimate combination of alleles of those genes that are subsequently selected for specific study in order to reveal some genetic facts and traits of an individual.
According to the question, the two F1-hybrid pea plants for spherical seeds have the genotype of Rr and when these two genotypes are crossed with one another, it produces offspring with the genotypes RR, Rr, Rr, and rr. In this set of offspring, 2 of them have heterozygous genotypes.
Therefore, a genetic cross between two F1-hybrid pea plants for spherical seeds will yield 50% of plants with a heterozygous genotype in the F2 generation. Thus, the correct option for this question is C.
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