Compared to the oceans, lands A. are nutrient-rich environments. B. contain limited nitrogen. C. are nutrient-poor environments. D. are poor in silica and iron.

Ja'ron lives near a river that flows through farmland. He notices that the river has become more polluted over the years. The water that was once clear is now sometimes cloudy and has an unpleasant odor.

Which statement best describes a controlled experiment

What is the process in which amino acid chain arrange themselves as three-dimensional structures? A. splicing B. folding C. linking D. splitting

Fats or lipids form animal body fat that is used for stored energy and insulation

Mr. Miller and his son, Jake, are very similar. Both are tall, left-handed, and good at math. Everyone says Mr. Miller looked just like Jake when Mr. Miller was Jake's age. Jake is wondering how this is possible.

A mutation may be passed along to human offspring through what

If an organism has 24 chromosomes in each body cell, how many chromosomes would you expect to find in the organisms sex cells?

What can be related to heat flow and movmement to molten rock within the interier of the earth

4 illnesses causes by global warming

What is not functioning properly in a person with diabetes