Which two characteristics are used to classify stars on the hertzsprung-russell diagram? a: size and density

b:density and composition

c: composition and temperature

d:
temperature and absolute brightness

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

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.

What are the seven economic and social goals?