Which of the following best describes protists? a)they are a diverse group of eukaryotes that include several unrelated lineages. b)they are a diverse group eukaryotes with a single common ancestor. c)they are a diverse group of prokaryotes that includes several unrelated lineages. d)they are diverse group of prokaryotes with a single common ancestor

The term used to describe a disease-causing microorganism isa. virus.b. infection.c. pathogen.d. microbe.e. bacterium.

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

As a result of wildfires, in grasslands. a) tree growth increases b) grass growth increases c) soil quality decreases d) invertebrate variety decreases