Increased carbon in the oceans has caused the ph levels of the water to decrease. what is the largest impact of this ocean acidification on marine life?
a. increased coral bleaching
b. increased fish predation
c. increased marine bird migration distances
d. increased marine mammal hibernation time

option A Increased coral bleaching

Explanation: Increase carbon dioxide concentration in ocean causes acidity . To construct skeleton, corals takes calcium carbonate from sea water. Carbon dioxide affect corals badly preventing formation of calcium carbonate in ocean.

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.

answer; three;