La fotosíntesis requiere la presencia de luz.

According to the law of conservation of energy, energy can neither be created nor destroyed. if this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?