All communicable diseases
a. involve viruses as the pathogen
b. only occur in animals
c. are contagious
d. are caused by vectors
e. are caused by microorganisms or their products

Which type of bond forms between water moleculesstrong bondhydrogen bondcovalent bondpolar bond

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.