What percentage of the Earth's oxygen are phytoplankton responsible for producing?

The main site of alcohol metabolism is the

Several reservoirs hold water during the water cycle. Which one identifies the aquifer? a.) water in the clouds b.) water falling from clouds to earth c.) water stored underground d.) water in a lake or ocean

Are sound waves or ocean waves longer?

Colorblindness is more common in males than females because?

What is/are one source of mineral deposits on the seafloor? A. Coral reefs B. Lagoons C. Seafloor spreading D. Volcanic vents

Which type of microorganism causes malaria? A. virus B. protozoan C. bacterium D. fungus

Which of the following makes ice cores so useful in determining the composition of the atmosphere in the past? A. the presence of pollenthe B. temperature of the core C. air bubbles D. fossilized plants

Describe how dominant and recessive alleles are represented in a Punnett square

What does adaptive radiation cause? A. Higher extinction rates B. Higher gene flow C. Higher biodiversity D. Higher genetic drift

How does each new cell formed by cell division differ from the mature cell? OA. Each new cell has a larger ratio of surface area to volume. OB. Each new cell has different information in its nucleus. OC.