A red blood cell has a diameter of approximately 8 micrometers, or 0.008 A model represents its diameter as 8 um. What is the ratio of model size to actual size ?

Apart of an ecosystem that can restrict the growth of a population is referred to as

What can be said about farmers in highly developed countries? a) they have little or no negative impact on the environment. b) they practice subsistence agriculture. c) they are able to incorporate polyculture into their farming practices. d) they utilize organic farming techniques on a regular basis. e) they rely on large amounts of energy from fossil fuels.

In a cladogram' when does a group of organisms branch off