Question #1:
where does all the energy for this pyramid come from?
question #2:
which level has the most organisms?
question #3:
which level has the least amount of energy
question #4:
what do the producers do with 90% of the energy from the sun that is not passed on?

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

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

How dose plate tectonics effect climate