Which of these are gametes? (Select all that apply.)
zygote
sperm
spore
egg

The leopard frog and the pickerel frog are two closely related species. in areas where their ranges overlap, the frogs will remain separate species if they

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.