Question 2 Scientist study the
to learn about the history of life, past environments on Earth, and
how different groups of organisms have changed over time.
Historical Record
Animal Record
Fossil Record
Earth Record
A heavy flood washed away over five meters of soil and rock. The laun
rock that was exposed by the fine

carbohydrates: (starches and sugars) composed of carbon, hydrogen, and oxygen.

lipids: (fats, oils, and waxes) are made of carbon and hydrogen atoms.

nucleic acids: contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. they are polymers of nucleotides. a nucleotide has three parts, a 5-carbon sugar, a phosphate     (-po⬇️4) group, and a nitrogenous base.

proteins: made up of nitrogen, carbon, hydrogen, and oxygen. they are polymers of amino acids.

meiosis is the correct answer

answerblank(1); afferent neurons; blank(2); efferent neurons;

the correct answer is: " ventricles " .

{source: refer to text within question.}.