What observation did darwin make that suggested there had been geological changes in earth's history?
a. giant tortoises
b. fossils of giant sloths
c. fossil shells on top of mountains
d. an absence of rabbits in south america

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Pl which diagram illustrates prophase?

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