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puteri [66]
3 years ago
12

Which geologic era lasted the longest?. . A. Cenozoic. . B. Mesozoic. . C. Paleozoic. . D. Precambrian. . I think, B.

Biology
1 answer:
Zanzabum3 years ago
6 0
D. Precambrian

<span>The Precambrian Era is the longest geological era beginning 4.5 billion years ago and lasting approximately 4 billion years. The Precambrian era is generally separated into two eons the first of which being the Archaean Eon. spanning from around 4.5 billion years ago to 2.5 billion years ago, during this time air temperatures lowered and the water vapour condensed forming the first primeval oceans. This was a period of great volcanic activity when immense lava flows solidified both on the surface and below were transformed into rocks which were then carried by the first rivers to oceans where they were deposited at the bottom of the oceans forming the first sediments. The second eon was the Proterozoic Eon spanning from 2.5 billion years ago to 500 million years ago. </span>
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Help please stuck on number <br><br>4 down<br>16 down <br>3 across
aleksklad [387]

4 down is a mutation

16 down is Proteomics

3 across is amino acid (no space)

4 0
3 years ago
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The big bang theory of the formation and expansion of the universe is supported by the observed ____
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When phosphorus intake is high, the most likely consequence is that:____
sashaice [31]

Answer:

High intake of phosphorus make the bones to be very weak and unhealthy.

Explanation:

When too much of phosphorus is taken, it makes the body to attract alot of calcium from the bones In order to keep a balance on the blood. In doing so, the calcium that is required to strengthen and make the bones strong are lot available and the resultant effect is weak and unhealthy bones.

The symptoms of high intake of phosphorus are muscles pains, muscle weakness, joint pains, itching or red eyes, diahorea, constipation, nausea e.t.c.

3 0
4 years ago
do all cell types, such as skin cells, fat cells, muscle cells and bone cells, have the same cell cycle lengths (as in the time
frozen [14]

Answer:

No

Explanation:

They have different division rates as some are more important for the body's health than others.

Ex) Skin cells repair very fast as they are on the exterior of the body and are constantly damaged, needing to be repaired quickly to prevent infection.

8 0
3 years ago
The economic principle that helps ensure that scarce resources are allocated efficiently is
disa [49]

Answer:

The economic principle that helps ensure that scarce resources are allocated efficiently is "the profit motive."

Explanation:

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6 0
4 years ago
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