How does the amount of day light affect the number of eggs laid by a chicken? Hypothesis: 
Independent variable: 
Dependent variable: 
Control variable: 

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

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.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell