Geologists discovered fossil evidence of mesohippus, an ancestor of the modern horse. mesohippus lived in north america about 40 million years ago. mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth. what statement is best supported by the fossil evidence? a) ancient horses were once carnivores. b) horses have evolved over the last 40 million years. c) horses migrated from south america into north america. d) modern-day horses share a common ancestor with all mammals.

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.

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

Select the correct answer from each drop-down menu proteins are