The Answer is D. The sun's large mass causes it to have significant gravitational force, holding planets in their orbital paths. The moon does not effect this pull, as the sun's pull is much stronger than the moon's. The moon is responsible for the tides of the Earth, and it in fact rotates around us.
I believe it is DNA replication
Answer:
The K-T boundary in Zumaia, Spain is sharp--representing an abrupt change in the marine ecosystem.
The K-T boundary separates rock layers of the Cretaceous period from those of the Tertiary period.
The K-T boundary dates to 65 million years ago (when the dinosaurs disappeared)
Explanation:
The Cretaceous-Tertiary (K-T) extinction is the period between the mass extinction of plants and animals about 66million years ago. Based on geological records the interval between the Cretaceous period and the present day Tertiary period is marked by a boundary is called K-T boundary.Based on carbon dating this has been estimated to be 65.5 million years ago.
Evidences has shown that, this boundary must been created by asteroid -Chicxulub Crater and its impacts must have killed all green plants due to the clouds it produced which blocked sunlight penetrations. This decimated the dinosaur population due to lack of photosynthesis.
Answer:
The answer is statement 3: Smaller class size is related to better academic performance
Explanation:
An hypothesis is an assumption taken to be true for the purpose of investigation.
Unlike statement 3, the statements 1, 2 and 4 are more like facts, since they are definite.
Thus, statement 3 tells of an assumption, and is an hypothesis