An ecosytem is a community of organisms at a major regional or global level

Since hemoglobin is attracted more to carbon monoxide than it is to oxygen, what is likely to happen to a person if he breathes in excessive amounts of carbon monoxide? He would exhale deadly carbon gas. He could go blind.

Why does allopatric speciation occur more often in animals than sympatric speciation?

Which of the following is true of all greenhouse gases A) They are naturally occurring. B) They exist in fixed quantities. C) They trap energy in the atmosphere. D) They reflect incoming solar radiation.

Which of the following statements is true? a. Quats are halogen-based disinfectants, while hypochlorite-based disinfectants are cationic detergents. b. Quats are considered high-level disinfectants, while hypochlorite-based disinfectants are not. c.

if a blood clot is preventing blood from entering a kidney but is not affecting blood flow in other vessels which vessel most likely contains the clot

Which of the following choices is a goal of sustainable practices? A. They focus on using resources for maximum productivity. B. They focus on using resources that can disappear if overused. C. They focus on using resources that can be renewed. D.

Why are atoms so important?

Which of the following is the best example of homeostasis in the human body? and why?

Dna determines the structure of proteins produce by cells?

What does a organism that is still has many cells produce spores and gets food from the enviroment