Which organelle changes chemical energy into a form that is usable by the cell? A. mitochondria B. ribosome C. nucleus D. cell wall

Precipitation moves down into the soil and becomes groundwater. Groundwater that travels into the saturated soil zone becomes part of

Which of the following is NOT a correct statement regarding the theory of evolution? The offspring of a species compete with each other for limited resources. All organisms in a species are genetically unique.

Which part of the cell membrane is semipermeable or controls what enters and leaves the cell

Which of the following natural factors is likely to support coastal dune formation? Winds blowing offshore Vegetation around the beach Strong winds blowing in all directions Higher rate of erosion than deposition

How much time is needed to form most fossils? a few months a few years hundreds of years millions of years

Plants, like animals, perform cellular respiration. What is the gas released into the environment by breathing? What is the gas withdrawn from the environment in this process?

Which of the following elements is an essential element that makes up ATP

An ultrasound procedure that evaluates blood flow in an effort to determine the cause of a localized reduction in blood flow is

Who studied the role of rna

What are some bad things about ribosomes?