Why is soil important to plants? a.
It provides them with nutrients.
b.
It provides them with water.
c.
It provides them with a medium for growth.
d.
All of the above

d i think its   answer d

b. climate change will cause an increase in biodiversity of all ecosystems.

hope this

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.  

la transducción de señal ocurre cuando una molécula de señalización de fluido extracelular activa un receptor de superficie de la célula.