Answer:
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Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO2) and methane (CH4), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place.
Explanation:
comtrast:
the main difference between genetic diversity and species diversity is that genetic diversity is the differences of DNA among individuals of a particular species where species diversity is the variety of species in a particular region.
compare:
species diversity within communities and genetic diversity within populations are hypothesized to co-vary in space or time because of locality characteristics that influence the two levels of diversity via parallel processes
Answer:
extrusive igneous rock phase of the rock cycle
Explanation:
When the magma cools onto the rock it is called extrusive ingenious rock
Molecular clocks starts counting mutations at the actual
time of divergence, and are used to estimate the time since a common ancestor.
It suggests that a lineage split occurred 700 000 years ago, 300 000 years earlier than first thought.
I think the answer is B, but I might be wrong