What is primary sucession? a
When there are too many species in an ecosystem.
b
When a species dies out in an ecosystem.
c
When pioneer species start a new ecosystem in a lifeless area.

C

Explanation:

Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".