You compare the genomes of two related species. You find that genes that regulate developmental processes (the ones that shape how the body forms) exhibit a lot of non-synonymous substitutions, while genes involved in basic cell function exhibit more synonymous substitutions. What does this indicate?

It means that the developmental regulation genes are being affected by drift, while the basic cell function genes have a lower rate of mutation.

a: the sheep and waste material both release carbon into the atmosphere.

ocean expansion, global warming is melting icebergs and causing water levels to rise.