Which ecosystem is the least stable?

A rain forest on a small island

B savanna on a large volcanic island

C vast coral reef in a warm ocean

D patch of lichens on bare rock

Why were the researchers surprised to find out how old the remains of the hobbit were?

Daughter Cells have how many chromosomes compared to parent cell?

Charles darwin was not the only one to conceive of natural selection. who published an article suggesting current species were descended from other species?

Under what condition is the arac protein an activator? under what condition is the arac protein an activator? the arac protein is an activator when it is bound to any sugar molecule. the arac protein is an activator when it is bound to lactose.

Which phrases describe all the outer planets' motion? Select two options. A no rotation B fast rotation C slow revolution D opposite revolution E north to south rotation

Is it better to have more saturated fat or unsaturated fat in your diet

What characteristics do all animals share?

Explain why resource availability and allocation are an important concern for governments.

Which processes happen in the kidney? Select three options.

A student claims that cellular respiration is essential to cells so that they have a means for getting rid of excess carbon dioxide. What is wrong with his statement?