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ale4655 [162]
2 years ago
6

What is a pure substance?

Biology
2 answers:
givi [52]2 years ago
8 0

Answer:

option C is the correct

ser-zykov [4K]2 years ago
6 0
B



if yoy have notes…
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Which structure is present during cell division in plant cells that is not present in animal cells?
san4es73 [151]

Answer:

Cell Wall

Chloroplast

Large Vaculoe

Explanation:

None of these are found in an animal cell.

4 0
3 years ago
What is an indication that water is entering a cell?
babunello [35]

Answer:

water decreasing from where it came from

Explanation:

that or the cell starts to swell

3 0
2 years ago
Scientists studied the evolution of horses. They concluded that horses evolved with the emergence of grasslands and an increase
zaharov [31]
They concluded that horses evolved with the emergence of grasslands and an increase of predators. The digits of their early Eocene ancestor evolved into hooves.
3 0
3 years ago
Read 2 more answers
How does the development of the cell theory model how most theories are made?
lora16 [44]

By the late 1830s, botanist Matthias Schleiden and zoologist Theodor Schwann were studying tissues and proposed the unified cell theory. The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells.

5 0
3 years ago
A letter about the evidence of evolution
GuDViN [60]

Answer:

I am writing this in response to a letter regarding evolution. Evolution is increasingly solid, not shaky. Darwin’s “theory” or explanation was a way of understanding what he had discovered (which did not include genes, chromosomes, DNA or nucleotide bases). Our explanations now include genetics and the commonality of mutation.  

Proofs are solid, not in question by serious scientists. Direct observation is one, which we see in the fact that this year’s flu evolved a little too far from last year’s, so flu shots are less effective this year than we would like them to be.  

Fossils tell the story well: whales with legs, dinosaurs with feathers and Tiktaalik. The latter was found in the Canadian north and is part fish, part amphibian, before there were ever any amphibians. Imperfection is a good proof: think of your useless appendix, the very bad design of your ankles, knees, and back (talk to a chiropractor about that).  You have big toes because they used to be useful thumbs for your grasping feet.

Many other animals and even plants similarly have flaws that show their evolutionary past. Two large human chromosomes reflect the coming together of two chimpanzee chromosomes each.

Hope it helps,

Please mark me as the brainliest

Thank you

5 0
2 years ago
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