On a yearly basis, agents of erosion are more active on?

the answer to your question is b

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

the question isn't complete here so i can't right an answer '_'

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.