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Nataliya [291]
3 years ago
6

What is required for sympatric speciation to occur?

Biology
1 answer:
Rudik [331]3 years ago
7 0
D. Geographic separation of a population
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What gift did dr paricia get her mother
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she got her flowers and chocolates
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List the atmospheric layers, temperature, altitude and density of those layers, and a unique object found in those layers.
Fiesta28 [93]

Five layers of the atmosphere are troposphere, stratosphere, mesosphere, thermosphere and exosphere.

<u>Explanation:</u>

Troposphere is the lowermost layer of the atmosphere which is found in the 0-12 km range. The temperature of the troposphere ranges from 15°C to 51°C.  Aircrafts driven by propellers can access the troposphere only.

Stratosphere is the layer of atmosphere that is second from earth. It is found in the 12-50 km range. Its temperature ranges from -51°C to-15°C. Jet-powered aircraft can access the stratosphere.

Mesosphere is the third atmospheric layer. It is found in the 50-85 km range. Its temperature ranges from -15°C to-120°C. rockets and rocket-powered spacecraft can access the mesosphere.

Thermosphere is the fourth atmospheric layer. It is found in the 500-100 km range. Its temperature ranges to about 2000°C. the International Space Station orbits in the thermosphere.

Exosphere is the topmost atmospheric layer. It extends to 10000 km above earth. Its  temperature is greater than 2000°C. most of the satellites that orbit the earth are found in the exosphere.

The density of atmospheric layers decreases while moving up along the layers. Thus troposphere has the maximum density.

7 0
3 years ago
At what point do you feel it is necessary for environmentalists to get involved in creating man-made problems with natural ecolo
oksian1 [2.3K]

Answer: Ecosystem degradation

Definition of terminologies:

1. Natural ecological succession is the gradual change in the species composition and diversity in the ecosystem and the development of ecosystem over a period of time, resulting to stable community.

2. Ecosystem refers to group of plants, animals and other living components functioning in their non-living environment.

3. Ecosystem degradation refers to the depletion of resources in the ecosystem

Explanation:

When there is ecosystem degradation, it is necessary for environmentalists to get involved in creating man-made problems with natural ecological succession and this process is called ecological restoration.

Environmentalists creates man-made problems to either accelerate or reverse the change in the ecosystem.

Degradation comes in different ways (e.g increased soil erosion/flooding, disease outbreak,deforestation, pollution of the ecosystem etc.) and are greatly influenced by climate change.

Environmentalists curb the menace by:

1. Introducing resistant species against disease outbreak;

2. Improved ecosystem service;

3. Buffer zone establishment to resist pollution in any form.

6 0
3 years ago
14C is a radioisotope that decays into what.​
mel-nik [20]

Here is your answer

C14 radio isotope decays into Nitrogen

HOPE IT IS USEFUL

3 0
3 years ago
Read 2 more answers
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