The introduction of atmospheric oxygen led to the increase in what type of organism

What is the approximate size of a nucleus in a elodea cell?

Dna replication occurs by the addition of nucleotides to the end of the dna molecule. results in the formation of four new dna strands. produces two daughter dna molecules that are complementary to each other.

Compared with the numbers of grasshoppers or deer, there are not a lot of mountain lions. The reason that large and fierce top-level carnivores are rare in an ecosystem is that

Atoms spread far apart

Is water an abiotic or biotic factor?

what natural hazard is often caused by human activities and is triggered during and after periods of drought

If a species is suddenly introduced into a new habitat, what might occur?

Brainliest hurry timed! How many groups did Aristotle use to divide all of the organisms in the world? 1 2 3 4

Carl wants to find out how exercise affects the body temperature of different people. What tool will Carl need in order to conduct his experiment?

3 How does rain form? Water rises, cools, evaporates, and then condenses. Water cools, condenses, evaporates, and then rises. Water evaporates, cools, rises, and condenses. Water evaporates, rises, cools, and then condenses.