Which of the following occurs prior to speciation
a) organisms of different populations join together
b) different species share the same space
c) a major change on earth takes place
d) a population is divided

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

What is the ecological role of food chains and food webs

Witch theory suggests all living things are made up of cell or cells