Explain what happen to a water molecule entering lamella in the process of photosynthesis​

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what