How long do we think that living things have existed on earth

What process pulls water through the stem of plants

Cite a task that the chimpanzee's hand would enable it to do that the hand of the squirrel cannot

During the initial development stages of cleavage, what are the individual cells called? 1) gametes 2) blastopores 3) blastomeres

The PCR technique doubles the amount of DNA in a sample in each cycle. If you started the PCR technique with two fragments of double-stranded DNA, calculate how many double-stranded DNA fragments you would you have after four cycles.

After eating a salty fish dinner you are very thirsty for plain water, a condition described as: A. intracellular thirst B. extracellular thirst C. primary thirst D. secondary thirst

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.

Which are biotic factors in an American alligator's environment? Choose all answers that are correct. A. temperature of the water B. amount of oxygen gas in the water C. type of grass needed for nests D. number of available mates