Why does earth have a liquid water supply and the moon does not?

a. the moon does not have a magnetic field
b. earth is much colder than the moon
c. earth was bombarded with comets
d. the moon does not have strong enough gravity

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

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.

How does a gymnosperm prevent itself from pollinating the same tree