What is the most abundant gas in the atmosphere

A:ozone

B:water vapor

C:oxygen

D:nitrogen

What is chemistry? a) the study of matter and how it changes b) the study of living things and how they change c) the study of matter and how it moves

Why is the blood that drains into the hepatic portal circulation nutrient-rich

How are producers able to produce food?

Prokaryotes are considered by the scientific community as the most ancient life-forms on Earth. Yet, these primitive cells share many common characteristics with the more modern eukaryotes.

Flagella are used by some unicellular organisms to perform which function?

Sheath of schwann cell containing cytoplasm is called

Job pressure is a leading stressor for american adults. a. True b. False

A green pea plant (Gg) is crossed with a yellow pea plant (gg), what is the phenotype and the genotype

Is atmospheric nitrogen easily used by plants

What role do specialized cells perform in establishing homeostasis? Specialized cells work independently to perform their specific functions. Specialized cells work only as a team to perform the functions of the body.