What is a community? Paleontologists have found evidence that after a major extinction occurs, ____

Biology

2 answers:

OverLord2011 [107]3 years ago

8 0

Answer:

An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth. There is a sharp change in the diversity and abundance of multicellular organisms. I

Paleontologists have found evidence that after a major extinction occurs,many new species often appear at about the same time .

Explanation:

son4ous [18]3 years ago

7 0

Answer:

new species often appear at about the same time.

Explanation:

A biotic crisis or a mass extinction crisis is a rapid and widespread decrease in biodiversity. There is a clear change after the mass extinction, in the diversity and of multicellular organisms.

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30 POINTS PLEASE HELP

Arlecino [84]

changes in abiotic factors is the most appropriate answer for this question.

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(by Benjemin)

3 0

3 years ago

Morning commuter traffic in cities contributes to ____ smog. In this type of air pollution, a mixing of ____ from certain plants

azamat

Answer:

photochemical

hydrocarbon

Explanation:

Morning commuter traffic in cities contributes to photochemical smog. In this type of air pollution, a mixing of hydrocarbons from certain plants, nitrogen oxides from cars, and UV radiation from the sun results in a variety of pollutants, such as ground-level ozone, which can cause coughing and breathing problems.

Photochemical smogs are caused by the photochemical reaction of hydrocarbon and nitrogen oxides in the lower atmosphere with sunlight playing a major role. The reaction of the hydrocarbon with the nitrogen oxide in the presence of light leads to the evolution of ozone gas while nitrogen oxide has the capacity to react with the sunlight on its own to produce nitrogen dioxide. This result in the formation of smog

4 0

3 years ago

While walking in the forest, your friend observed a small animal crawling on a tree. The animal had a rigid body with three body

Neporo4naja [7]

Answer:

The most likely preferable option will be - A.

A. Insects.

Explanation:

The basic features of insects -

Insects have an exoskeleton outside of their body or a shell-like covering on the outside of its body.
Insects have a body with three segments: head, thorax, and abdomen.
Insects have two large eyes and a pair of antennae on top of their heads.
Insects have six legs (3 pairs).
Insects have two pairs of wings on the dorsal part of their body.