One way bacteria are important to the Earth and its ecosystems is that

a. bacteria concentrate valuable minerals.

b. bacteria decompose dead organisms.

c. bacteria produce acetone.

d. bacteria use oxygen.

Enzymes are made of which type of marcomolecule

How could changes to the global winds and ocean currents affect climate on land?

Small, flat bone that is also known as the kneecap:

Which nutrient is required for nearly every chemical reaction in every cell in your body? Select one: a. calcium b. water c. vitamin B6 d. protein

Decomposers are necessary in a food chain because they (1) manufacture food by photosynthesis (2) return nutrients to the ecosystem (3) absorb energy from the Sun (4) produce organic nutrients

About how much of the United States is covered by forests? A 90% B 10% C 50% D 30%

What is the layer underground where all empty spacess are filled with water

What type of epithelial tissue is specialized to stretch repeatedly without damage?

A research team needs an antibody that binds to a protein of interest so that protein expression can be monitored. They use epitope tagging, adding an epitope (a sequence of amino acids) to the protein through DNA recombination.

A physician conducts a survey among 100 patients suffering from migraine headaches severity among his patients. What kind of data analysis would he apply to interpret the results obtained from this survey?