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Alecsey [184]
3 years ago
14

What's the primary reason that mammals and avian dinosaurs thrived in the Paleogene period? A. Plants developed as the main food

source for these heterotrophic organisms. B. Their predators had been killed off by the Permian extinction. C. Their predators had been killed off by the Cretaceous-Paleogene extinction. D. The earth significantly warmed, and cold-blooded animals couldn't survive.
Biology
2 answers:
antoniya [11.8K]3 years ago
4 0

Answer:

I think that it might be A

Explanation:

Inessa05 [86]3 years ago
3 0

Answer:

The correct answer is option B, that is, their predators had been killed off by the Permian extinction.

Explanation:

The avian dinosaurs and the mammals were small creatures, living under the pump of the dinosaurs that reign the world, however, also were ceasing the further enhancement in the development and the size of these species. At the termination of the Cretaceous era, due to the colliding of an asteroid on the Earth, all the dinosaurs got wiped out from the Earth's surface, with the only remaining one of the species of dinosaurs were the small avian species.  

Due to the opening of lots of niches, the avian dinosaurs and the mammals briskly began to diversify, evolve, and become much bigger in size. The mammals won the race for supremacy and they became the most prevailing species on the Earth.  

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Answer:

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Explanation:

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Generally, adhesion or adhesive forces is a term used to describe the force of attraction between molecules of different substances. This is as opposed to cohesion or cohesive forces which refers to the force of attraction between the molecules of the same substance.

Hence, when molecules of water attract or stick to other molecules, the force at play is an adhesive force or simply adhesion.

8 0
2 years ago
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Natasha_Volkova [10]

Answer:

The correct answer is option b, 0.3m/s

Step by Step solution:

The relation between speed, wavelength and frequency of a wave is given by the following equation:  

Speed = Wavelength x Frequency

Substituting the values in above equation we get –  

= 3  x 0.1  

= 0.3 m/s  

7 0
3 years ago
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QveST [7]

Answer/Explanation:

Natural selection - over time - selects for traits that improve fitness. A butterfly with wing coloration that looks like a hungry owl would certainly be a deterrent to their natural predators, such as smaller birds. This is because the owl is the predator of the smaller birds, and their instinct is to avoid the owl.

If a mutation arose that resulting in coloration that looked like an owl, (or at least slightly menacing) this would be beneficial to the butterfly, as it would be more camouflaged from predators. This means it would be more likely to reach reproductive age and pass the mutation onto its offspring, who would also have a competitive advantage.

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7 0
3 years ago
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gtnhenbr [62]

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3 0
2 years ago
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3 years ago
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