Answer: Science, engineering, and technology permeate nearly every facet of modern life and hold the key to solving many of humanity's most pressing current and future challenges. The United States' position in the global economy is declining, in part because U.S. workers lack fundamental knowledge in these fields.
Explanation:
Please help this is a science question
Explain the difference between the offspring of sexual
reproduction and the offspring of asexual reproduction.
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique. During sexual reproduction, two haploid gametes join in the process of fertilization to produce a diploid zygote.
can someone answer: A very bright, young galaxy with a giant black hole in the center is called a ______________?
and answer: what is the name of the galaxy we live in, and what type of galaxy is it?
Answer:
nebula
the milky way
im sure of the first two
Explanation:
Answer:
Galaxy M87
Explanation:
We live in the Milky Way
(Spiral galaxy)
These sunflower seeds have sprouted and are growing tall The seeds need energy to grow. The seeds can make their own food
using water, carbon dioxide and
The end result is sugar or glucose that plants use as food,
A)
air
B)
soil
oxygen
D
sunlight
soil and oxygen sorry if it's wrong
PLEASE HELP, WILL MARK BRAINLEST TO WHO EVER ANSWERS FIRST
The table below shows the half-lives of four radioactive materials. Radioactive material Half-lives Bismuth-212 60.5 seconds Sodium-24 15 hours Iodine-131 8.07 days Strontium-90 29 years Which of these materials will decay the slowest to one-fourth of its original amount? Bismuth-212 Sodium-24 Iodine-131 Strontium-90
Answer:
Strontium
Explanation:
The materials that will decay the slowest to one-fourth of its original amount is Strontium-90. The correct option is D.
What are half-lives of radioactive materials?The half-life of a radionuclide is the amount of time it takes for half of its radioactive atoms to decay. A good rule of thumb is that you will have less than 1% of the initial amount of radiation after seven half-lives.
Strontium-90 is considered hazardous waste. Because of its 29-year half-life, it can take hundreds of years to degrade to negligible levels. Water and food contamination may raise the risk of leukemia and bone cancer.
Strontium-90 has a half-life of 29 years (the time it takes for half of the strontium to emit radiation and transform into another substance).
Therefore, the correct option is D. Strontium-90.
To learn more about radioactive materials, refer to the link:
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Found in both plant cells and animal cells, the________________surrounds and protects the cell, and allows certain chemicals to enter and exit the cell.
cell wall
cell membrane
cytoplasm
(This is 7th grade science).
Answer:
cell wall
Explanation:
The cell wall is the protective, semi-permeable outer layer of a plant cell
Answer:
cell membrane
Explanation:
cell membrane found in both plant cells and animal cells.
It is the outermost part of animalcell and second layer of plant cells.
Hope this answer help you
How can you tell a eukaryotic cell from a prokaryotic cell just by looking at a photo like this?
What do plants need in order to carry out photosynthesis?
Answer:
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food
How many letters in a codon?
Select one:
O 5
o 6
O 3
o 4
Forest Fires are factors because they do not depend on the population.
А density dependent
B density independent
c both are correct
Answer:
I think density dependent.
Which device is using a motor?
A. A water heater creates heat energy from electric energy
B. A waterfall rotates a waterwheel to turn an axle
C. A body massager uses electric energy to move back n forth
D. A solar charger creates electric energy from the Sun
ANSWER:
C. A body massager uses electric energy to move back n forth
PLEASE HELP ME ;0;
A filmmaker wants to depict a realistic dramatization of a scientist making and communicating an important scientific discovery. Which plot description would best depict the methods of discovery and communication that a modern professional scientist uses?
A: The scientist collaborates with others to plan and carry out an experiment and then writes a paper that has a clear conclusion. He submits it to a professional journal for peer review, after which the results are presented publicly.
B: The scientist works with a few other scientists in a secret lab that is sponsored by a large business corporation. When the scientists have results, they contact others in the scientific community to report their results.
C: The scientist works alone in a lab until he makes a dramatic breakthrough and then immediately announces the results through a worldwide press conference.
D: The scientist seeks input and data from a wide range of people of different scientific backgrounds and then publishes all the data and results on the Internet so that all the collaborators can apply it to their individual research.
Answer:
Answer is uhhhhhhhhh
Explanation:
A??
The scientist collaborates with others to plan and carry out an experiment and then writes a paper that has a clear conclusion. He submits it to a professional journal for peer review, after which the results are presented publicly.
Answer:
ig A
Explanation:
Anyone know the answer to this please help. I know what the answer to 4 and 6 though.
Answer:
hey :))
Here are ya answers
3 goes to “A disease causing agent”
1 goes to “Tiny sacs within the lungs that exchange oxygen”
2 goes to “A cell that has a membrane bound nucleus”
and lastly 5 goes to “A cell that whos nucleus is not bound to a membrane”
hope i helped ya any :))
Nucleic acids are to DNA
as proteins are to...
Answer:
From DNA to RNA to proteins. Many genes encode protein products, meaning that they specify the sequence of amino acids used to build a particular protein.
Metamorphic rocks is changed into igneous rock by
Answer:
If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.
Explanation:
Which is an example of artificial selection?
Answer:
The correct answer is Choice 3(last choice)
(A farmer crosses two kinds of corn. He produces a new, better tasting type of corn)
Explanation:
Hope this helps!
Please mark me as Brainliniest.
1. A dominant trait is represent by a ___________ letter.
a. capital
b. lowercase
Answer:
A
Explanation:
A dominant trait is represent by a capital letter.
virus attaches to cell and ____ DNA/RNA
fill in the blank??? plsss help
Answer:
injects........................
Explanation:
it injects its DNA or RNA to initiate infection
4. What role does lymph play in the circulatory system? Please help ASAP
Answer:
The lymph help to return blood back to circulation after purifying it.
Explanation:
Lymph is a clear white fluid in the lymphatic system which consists of lymph, lymph node, vessels e.t.c.of the circulatory system that contain white blood cells that is lymphocytes which form part of the immune system and this lymph destroy or kill bacteria in the blood or fight against bacteria and it them return the blood back to circulation.
If the forest is left untouched, how will the forest change over
time?
The forest will remain unchanged.
The forest will remain unchanged.
The forest will be repopulated by trees and eventually become a forest again.
The forest will be repopulated by trees and eventually become a forest again.
The area will erode and remain without life.
The area will erode and remain without life.
Answer:
I believe the answer would be; the forest will be repopulated by trees and eventually become a forest again. Hope this helps!
Explanation:
A hawk building its nest on an arm of a saguaro cactus is a sign of
A. commensalism
B. mutualism
C. paraitism
D. predation
Why would athletes use sets and reps in their training sessions?
Answer:
Athletes use sets and reps in their training because they need to know the exact amount of training they need to do because too much and too little is bad.
Explanation:
HELP ASAP PLS!!!! Cystic fibrosis is an inherited genetic disorder that affects the digestive system and the lungs. If a mother carries a recessive allele for a genetic disorder, such as cystic fibrosis, under what circumstances will her children inherit the disorder?
A) The children’s father must also carry the recessive allele.
B) The mother’s father must also carry the recessive allele.
C) The paternal grandfather must also carry the recessive allele.
D) The children must be female like the mother to inherit the disorder.
Answer:
A
Explanation:
For a recessive gene to affect the child they must inherit two recessive alleles because if a dominant allele is inherited than the dominant trait will be the one that is expressed in the child. The only way to get two recessive alleles is to inherit one from both parents so the father must also carry the recessive allele. This means A must be the correct answer.
Which statement is true of recessive sex-linked traits such as color blindness ?
Answer:
colorblidness is carried on the X cromasome. since it is resessive it can be covered up. woman have 2 X cromasomes so both have to have it or she wont be color blind. men only have one X cromasome so its more likely that their just one X can have it
Explanation:
Answer:
Ressesive
Explanation:
Complete the following sentence: Oxygen is taken into cells by the process of.....
Oxygen is taken into cells by the process of simple DIFFUSION.
Simple diffusion is a cellular process by which small molecules (e.g., oxygen and carbon dioxide) pass across the plasma membrane and thus can enter and leave the cell.Simple diffusion always occurs in favor of a concentration gradient, i.e., from a region of high concentration to a region of low concentration.For example, oxygen (O2) molecules move from a region of high concentration in the lungs to a region of low concentration in the blood.This process (diffusion) does not require energy to move molecules across biological membranes.In conclusion, oxygen is taken into cells by the process of simple DIFFUSION.
Learn more in:
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How do lions feed and what type of behaviors do they utilize to obtain food?
Answer:
How the lion feeds: the female lions are called Lionesses they are the members in a pride that hunt, the male Lion just waits for the lionesses to kill the prey and then feeds on it for however long he wants to. The lionesses eat last.
What behaviors they use to obtain food: Lions stalk their prey, although ambush behavior has been observed. They hunt mainly during the evening and at night. You can still find the behavior/ instinct in house cats (stalking/ ambush like movements)
Explanation:
Hopefully this helped :)
can u please give me Brainiest
Question 10 of 10
How long do students have to complete the science section of the Aspire
test?
A. 55 minutes
B. 20 minutes
C. 25 minutes
D. 90 minutes
SUBMIT
Answer:
A. 55 minutes........................
Which should be considered first in evaluating the cost of implementing a new technology to increase crop
production?
A reduction in the number of hours needed to harvest the crops
B the amount of seeds that will be produced by the next generation of crops
the amount of crops already produced by farms
D possible negative effects of the new crop technology on the environment
Paurelia
POPULATION SIZE
_ caudatum
2
4
6
8
JO
12
14
16
The graph here shows the population growth curves of Paramecium aurelia and
Paramecium caudatum cultures after they were mixed together. This graph can be used
to illustrate the principle of:
Answer:
mutualism
Explanation:
cuz
is it bad if you eat a red banana? cause im a bit scared D: