How many fat cells are in a human being?

Which of the following is a barrier against pathogens provided by the skin? high pH mucus tears desiccation

How are gills and lungs alike

How to interpret the punnet square?

Which of these characteristics would describe a fungus? A) cells all contain chloroplasts for photosynthesis B) cells all contain a nucleus and cell wall C) cells do not contain a nucleus;

Which term is used to describe the variety of inheritable traits in a species? Ecosystem diversity Genetic diversity Natural selection species diversity

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.

Why are there species instead of a continuum of various animals?