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Anna71 [15]
3 years ago
5

Scientists know a lot about ancient Earth's climate because of clues that remain in rocks, ice, trees, corals, and fossils. Thes

e clues tell us that the
Earth's climate has changed many times over the years. There have been times when most of the planet was covered in ice, and there have also been
much warmer periods. Over at least the last 650,000 years, temperatures and carbon dioxide levels in the atmosphere have increased and decreased in
a cyclical pattern
Biology
1 answer:
dusya [7]3 years ago
7 0
HahahahahahahahahahHhhh
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Someone pls answer fast
fgiga [73]

Answer:

I would say overpopulation

Thus because when they are trying to navigate through jungles, they are destorying whats in their path, without realizing. There are so many of the elephants it just keeps happening over and over like a cycle.

5 0
3 years ago
NEED THIS ASAP ill mark brainliest Explain how the medical community can use computer-modeling tools, like the one shown in the
lorasvet [3.4K]

Answer:

here u go

Explanation:

<em>The modeling tool shows exactly how different body parts form. Doctors can use models, like the one in the video, along with ultrasound pictures of a developing baby, to determine whether the embryo is growing normally and is forming the proper body structures at the correct time. If not, the doctor could inform the parents of the problem before the baby is born. Doctors could then make a plan to treat the condition, if possible.</em>

3 0
2 years ago
Contractions of the heart generate blood pressure, which is responsible for moving blood through the blood vessels.
malfutka [58]

The contractions of the heart is what creates out blood to pulse through out body and is the basis of our blood pressure; which means this statement is TRUE.


The systolic number (top) of the blood pressure is our heart physically pushing the blood out of the heart and to the rest of the body.

The diastolic number (bottom) of the blood pressure our heart at rest when it has just finished with one pump.

8 0
3 years ago
Read 2 more answers
One of the questions early geneticists had to answer was how only four nucleotides can specify placement of 20 amino acids in pr
jenyasd209 [6]

Answer:

<h2>Codon </h2>

Explanation:

The sequence of DNA is transcribed into mRNA, containing the sequence  for protein synthesis, protein is synthesized according to the codons in mRNA.  This sequence of nucleotide on DNA/ RNA is divided into a series of three nucleotide units, and one unit of three nucleotide is  known as codons.

There are overall 64 codons, 61 codons out of 64 codons, codes for overall 20  amino acids, and the remaining three  are stop codons.

These there codon do not code for any amino acid.

And these 61 codons, they  code for total 20 amino acids. So one amino acid can be coded by one or more than one codons.

6 0
3 years ago
Five hundred million years ago, basaltic lava flowed in an area now known as Monticello, the historic home of Thomas Jefferson.
Slav-nsk [51]
I think, it’s option ( b ).
8 0
3 years ago
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