Bees can see yellow, blue, and ultra-violet
light but they cannot see red. bee-
pollinated flowers are mostly yellow or
blue with uv nectar guides to guide the
bee to their food source. once inside the
flower, the bees inadvertently pollenate
the plant.

easy

explanation:

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.