Why must organisms of the estuary be adapted to varying levels of salinity? A. Fresh river water flows into the estuary

B. Saline ocean water flows into the estuary

C. Ocean tides increase and decrease the amount of ocean water

D. All of the above

The major source of sediments found on the deep ocean bottom is

Which of the following can be used to make models? thermometer balance computers binoculars

Which of the following is a density-independent limiting factor? A. earthquake B. emigration C. parasitism D. disease

If a city is thought of as a plant cell, which part is the central vacuole?

How many amino acids form proteins

4. What is the role of detergent, alcohol, and salt in the extraction process?

What is the loss of an electron

Uit flies are commonly used in genetic investigations that focus on traits passed from parents to offspring over several generations. What can you infer is the reason fruit flies are the most commonly used organism for this type of investigation?

5 potential causes of Microevolution

Delia is interested in finding ways to cure diseases. Which of the following career fields would best suit Delia's interest? animal biology cytology nuclear biology zoology