How do cells obtain materials they need and get rid of waste products?

What is an organism's niche?

Why there are more bacteria in the front door entrance handle of a school than money ... (like coins) ?

The number of zebras in the zoo is considered a

Which factors are used to differentiate climate regions? Check all that apply. rainfall plant life animal life temperature wind

Which animal is a nocturnal creature? human dog owl cow

When so few members of a species reamin that it can no longer play its role in the biological communities where it is found, the species has undergone?

Describe what type of macromolecule lactose is and what the monomer of the macromolecule is

When Santos stands in a swimming pool and looks at his feet, his legs appear to be bent. Which is the term for this phenomenon? A) diffraction B) dispersion C) reflection D) refraction

What triggers pfiesteria change from a harmless algae feeder to a toxin producing fish killer?

Antibodies are made when animals detect a foreign antigen. All mammals carry albumin in their blood. How was a rabbit antibody against albumin created? Was this lethal to the rabbit? Explain you reasoning.