Answer:
D. They define geological periods because scientists use them as reference points for tracking the history of the earth.
Explanation:
Catastrophic events related to changes in geological timeline are very useful in defining geological periods.
These events have very significant appearance in the geological record and can be used to determine the history of the earth.
The catastrophic events usually culminates into extinction cycles or termination of some organisms from the earth surface.
Geologists use these events that are often wide spread to delineate geological periods.
what makes the two kinds of maritime air masses similar?
air masses uniform temperature and moisture content in horizontal direction. the properties of air masses are determined by the underlying surface properties where they originate
i want to play a game, like guess what line from the tv show or movie it came from
(omg im so bad at explaining things so if u didn’t understand anyways)
on what tv show or movie did this come from “MOM GET OFF THE PHONE”
it’s probably easy but okay.
BESTFRIEND WHAT IS THISSSSSS????
NOBODY UNDERSTANDS WHAT YOUR TRYING TO SAYYYY
which greenhouse gas is found in the highest concentration in the atomsphere
Answer:
watter vaper i beleave
Explanation:
PLEASE HELP ASAP ILL GIVE BRAIN BUT PLEASE A CORRECT ANSWER TYSM<3
Answer:
Some ice will turn into liquid water
Explanation:
How would the levels of organization in the body work to get the marching band member back to being uninjured? Does homeostasis in and between cells help to return organ systems and the organisms as a whole back to homeostasis?
Answer:
Repairing ability and homeostasis causes the injured parts to return back to uninjured.
Explanation:
Due to repairing ability of levels of organization in the body helped the injured parts to return back uninjured. Yes, homeostasis that is present in and between cells help to return organ systems back to homeostasis or equilibrium state of the body. Our body has the ability to main homeostasis whenever some disturbance occur in the body. If this homeostasis not present our body, there will be no repairing of damaged occurs.
It should be noted that the repairing ability and homeostasis are vital as they cause the injured parts to return back to being uninjured.
Homeostasis simply means the process that living things use to maintain stability while they adjust to the conditions that are best for their survival.
The homeostasis that is present in and between cells is vital for returning systems back to the equilibrium state of the body. The body of an individual has the ability to maintain homeostasis whenever there is some disturbance that occurs in the body.
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What location will enter darkness next as Earth's rotation continues ?
Answer:
well for me I think it's
Explanation:
the B
Answer:
I believe it is C
Explanation:
Many plants can reproduce both sexually and asexually. For example, rose bushes reproduce asexually when cuttings planted in the ground grow roots and become a new rose bush. They can also reproduce sexually when their flowers are pollinated. What is the primary advantage of sexual reproduction in roses?
Choose the correct answer.
(1 point)
A.
Roses can produce more offspring in sexual reproduction.
B.
Roses reproduce more quickly when reproducing sexually.
C.
Roses produced through sexual reproduction have more genetic variation.
Answer:
C. or A. but I think u should try C. first sorry if I'm wrong
plants reproduction can also reproduce sexually when their flowers are pollinated. They can also reproduce sexually when their flowers are pollinated. Roses produced through sexual reproduction have more genetic variation.
what is reproduction in plants ?Reproduction in Flowering Plants occur both asexually and sexually, flowering plants or angiosperms, use the sexual mode of reproduction.
Reproduction in Flowering Plants occurs in the flower as both male and the female gametes are present in it, various parts of flower involve in the process of reproduction.
There are four important steps in the reproduction of flowering plants. such as Pollination, Gametogenesis, Fertilization
The flower is a specialized structure where reproductive part of the plant, containing the male and female reproductive organs which facilitate fertilization.
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What makes sperm and testosterone
Answer:
your brain makes special hormones called GnRH, and these hormones signals the testes to make more testosterone.
Explanation:
i hoped this helped:)
Why does the cell complete DNA replication?
Answer:
The cell must replicated DNA because when the cell divides, the daughter cells must have identical copies of DNA. DNA replication occurs in the S phase during interphase of the cell cycle.
Describe the process of respiration which takes place in human beings when oxygen
is not available and give an effect
a _____ is an organism that cannot produce its own food, so it must obtain its energy by eating or other organisms
Answer: Heterotrophs
Explanation: Heterotrophs, also known as other-feeders, can't capture light or chemical energy to make their own food out of carbon dioxide. Humans are heterotrophs. Instead, heterotrophs get organic molecules by eating other organisms or their byproducts. Animals, fungi, and many bacteria are heterotrophs.
Answer:
Heterotrophs
Explanation:
Heterotrophs, also known as other-feeders, can't capture light or chemical energy to make their own food out of carbon dioxide. Humans are heterotrophs. Instead, heterotrophs get organic molecules by eating other organisms or their byproducts. Animals, fungi, and many bacteria are heterotrophs.
Autotrophs such as plants do that
hey please help plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Answer:
true.
Explanation:
the dominant (ex. RR) crossed with recessive (ex. rr) will make for example Rr, Rr, Rr, and Rr, which are all heterozygous.
how does the sodium atom bond to the chlorine atom ?
Explanation:
It is happening when a sodium atom loses an electron to a chlorine atom and because of that sodium atom is becoming a positive sodium ion and the sodium ions and chloride ions form an ionic lattice.
Sodium - Na
Chloride - Ch
Sodium and Chloride are both elements that cannot be found separately and free in nature but they are found as bonded together.
The study of how traits are passed from parent to offspring.
A.
Inheritance
B.
Gene Expression
C.
Translation
D.
Genetics
Answer:
Genetics
Explanation:
Genetics is the study of how traits are passed down to generations, like from parent to offspring.
Gregor Mendel is known as the father of genetics and was one of the first to study how traits were passed down across generations.
So, D is the correct answer.
What kind of waves are present during an earthquake? ...
What kind of energy does an unlit match have? ...
Which of these is another way to write Newton's second law of motion? ...
What is it called when light changes direction after leaving a lens? ...
How do you calculate density?What kind of waves are present during an earthquake?
Answer:
1.The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.
2. As the combustible materials burn, some of the chemical energy is transformed into heat energy, and some is transformed into light energy. Light energy, also known as radiation or electromagnetic energy, is a type of kinetic energy that takes the form of visible light waves, such as the light from a match
3. Newton's second law of motion is F = ma, or force is equal to mass times acceleration.
4. Answer: Refraction is the bending of light (it also happens with sound, water, and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms, and rainbows. Explanation: Refraction.
5. The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume.
True or False:
In a normal fault, the block of rock that lies above is called the footwall and the one below is
called the hanging wall
Answer:
false
Explanation:
when you combine two or more substances and something new is created that is an example of
A) MATTER
B) PHYSICAL PROPERTIES
C) CHEMICAL CHANGE
D) PHYSICAL CHANGE
This is C)chemical change
For example combustion where an organic compound is turned into CO2 and water.
Would a greater or less amount of exposed surface area absorb thermal energy faster? Why? Give an example.
Answer:
Explanation:
A greater amount of surface area exposed will absorb thermal energy faster compared to a surface with a lesser exposed area.
Thermal energy is a form of kinetic energy in which the molecules of a medium increases their velocity.
In a large area with high surface are exposed, the molecules are spread out openly without obstructing each other. This will enable a faster thermal conduction through a system. A small exposed surface area inhibits thermal conduction. Solar panels are designed to expose more surface area to abstract more thermal energy.What is meant by the term Reference Front?
Explanation:
The RF value is defined as the ratio of the eistance moved by the solute(i.e the day or pigment under test)and the distance moved by the solvent (known as solvent front)along the paper,where both distance are measured from the common origin or application baseline,that is the point where the sample is
Which substance increases its volume when it becomes a solid?
A. Mercury
B. Water
C. Salt
Answer:
B
Explanation:
when water is frozen, it expands, something to do with anomolous expansion of water.
Water increases its volume when it becomes a solid.
Define volume and its units?Volume is a measure of occupied three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.
The surface-area-to-volume ratio, also called the surface-to-volume ratio and variously denoted sa/vol or SA:V, is the amount of surface area per unit volume of an object or collection of objects.
If volume is the amount of 3-D space contained by a closed surface (e.g. the amount of space within a given cube, or cylinder, or any other 3-D shape), liquid volume is a way to measure an amount of liquid by describing it how much 3-D space it occupies.
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2. This body system sends out scouts to recognize pathogens such as
bacteria and viruses. Once identified, it produces antibodies to attack
and kill the pathogen. What body system is being described?
A-Immune
B-cardiovascular
C-muscular
D-digestive
Which would be a normal brain wave pattern for a relaxed adult?
A. 9 cycles/second
B. 2 cycles/second
C. 5 cycles/second
D. 14 cycles/second
Which part of plant cell helps the cell during cell division of plant cell ?
Answer:
nucleus
Explanation:
Nucleus helps in cell division.
The Villi list of adaptation
Answer:
Following are the salient adaptations of villi that make them good absorbers:
Villi are single cell thick. ...
Villi have rich network of blood capillaries . ...
Most important is: Apical membranes of Villi further form many finger-like projections called microvilli or brush borders. ...
Villi have permeable membranes .
The days are longer or shorter because the earth’s axis in blank
PLEASE HELP ME
Answer: Orbit
Explanation: The Earth’s axis being in orbit means that the Earth is in different positions around the sun at different points in time, causing day and night.
PLZ HELP WILL GIVE BRAINLIE AND STARS AND I WILL BE YOUR FRIEND
passive: doesn't require energy, from high to low concentration
active:requires energy, from low to high concentration
i dont know maybe
Explain what are ethics.
What are your feelings toward HeLa cells? (in at least 4 sentences)
Ethics are principles that govern a person’s behavior or the conducting of an activity
Answer:
HeLa cells are a great find in the science community and Henrietta Lacks' unique cells are still helping us today. They are perfect for important studies such as cancer, cell biology, genetics, and infectious diseases. Since now we have these unique immortal cells it is quite easy to start any scientific testing on human cells since their is an endless supply. Personally, I believe Henrietta Lacks will live on forever as a hero and mother of modern scientific advancements, since she quite literally, grew all of the modern cell research we have today.
Explanation:
What causes the sinking of water in the northern Atlantic Ocean, which helps to drive the Ocean Conveyor Belt?
a.) The high salinity from the south warms and becomes less dense.
b.) The high salinity from the south cools and becomes denser.
c.) The low salinity from the south gains salt and becomes denser.
d.) The low salinity from the south loses salt and becomes less dense.
Answer:
the answer
proberbaly C or B
Answer:it's B or C
Explanation:
In cold regions, such as the North Atlantic Ocean, ocean water loses heat to the atmosphere and becomes cold and dense. When ocean water freezes, forming sea ice, salt is left behind causing surrounding seawater to become saltier and denser. Dense-cold-salty water sinks to the ocean bottom.
Which genre uses narrative techniques to recount personal experience and development?
Answer:
A memoir.
Explanation:
A memoir is a biography written by someone that includes their personal experiences and knowledge. It's also kind of like a narrative.
Hope this helps! Have a nice day!
From one trophic level to the next, only_(a) % of the energy is transferred. The other
(b)___% is used by the organisms getting consumed during its life processes.
A. (a) 25, (b) 75
B. (a) 10, (b) 90
C. (a) 75, (b) 25
D. (a) 90, (b) 10
Answer:
B. (a) 10, (b) 90
Explanation:
The ecosystem consists of a flow of energy that unidirectional and there is always a decrease in the amount of energy when it's transferred from one place to another. Such as in the food chain there is a transfer of 10% amount of energy which is used by the various organisms and 90% of energy is lost between the tropic levels in form of heat and respiration.