Why are crystals in minerals formed from magma larger than mineral crystals formed from lava?

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring