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nadya68 [22]
3 years ago
5

An energy pyramid is represented below. The energy for use by

Biology
1 answer:
Airida [17]3 years ago
7 0

Answer:

The answer is the sun.

Explanation:

Level a represents the producers which you can tell, by their name, that they make their food. Producers are mainly comprised of the plants of our world. They get their energy from the sun and through photosynthesis, they turn it into energy.

By the way, B would be primary consumers which are the herbivores, C are the secondary consumers which include us people, and D are the decomposers, which include worms.

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Mendel's law of independent assortment states that __________ randomly assort their __________ during the formation of haploid c
Shalnov [3]

Answer:

alleles ,genes

Explanation:

Mendel's law of independent assortment states that alleles randomly assort their genes during formation of haploid cells. The paired factors that determine an organism's characteristics segregate separately from each other during sex cell formation.

4 0
3 years ago
Pls help. it’s not showing up on brainly pls
bulgar [2K]
The answer is A btw you don’t have to use that chart the best way to do or the easy way to do it by doing it on the amino acid wheel it’s much better and faster.
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How do organ cultures differ from cell cultures?
Over [174]

They can keep organ tissue alive for transplantation.

7 0
3 years ago
Which of the following are useful traits of cloning vectors?
SSSSS [86.1K]

Answer:

The correct answer is option - e. all of the above are useful traits.

Explanation:

A cloning vector is a small segment of DNA that can be established stably in an individual organism and able to internalize a foreign DNA for cloning purposes. The cloning vector could be taken from different organisms such as plasmid of a bacterium, or DNA from a virus. A cloning vector must possess some characteristics -  

The cloning vector must be self-replicating ability in the host cells, it should be small in size with restriction site for the restriction endonuclease enzymes in it. The replication character of the vector should not interfere with the internalized DNA fragment. The presence of marker genes in the vector is also a property that is helpful in identifying of recombinant cells.

Thus, the correct answer is option - e. all of the above are useful traits.

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3 years ago
Mucous membranes provide a ____________ barrier at body openings.
butalik [34]
<span>Mucous membranes provide a mechanical barrier at body openings. They also line the respiratory, GI, urinary, and reproductive tracts. Mucous membranes secrete mucus, a slimy substance that traps pathogens. The membranes also have hair-like cilia.</span>
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