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kirill115 [55]
3 years ago
8

What are the conditions on earth billions years ago

Biology
1 answer:
taurus [48]3 years ago
6 0
Life begun sortly after the earth formed 4.54 billion years ago but the conditions well they didn't call it the dark ages for no reason
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Describe the significance of enzymes in our digestive system having different optimal pH and optimal temperatures. (Hint: What d
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Answer:

Digestive enzymes play a key role in breaking down the food you eat. These proteins speed up chemical reactions that turn nutrients into substances that your digestive tract can absorb. Your saliva has digestive enzymes in it. Some of your organs, including your pancreas, gallbladder, and liver, also release them.

For most enzymes to operate in the body, the optimal temperature is 37 degree Celsius or 98 degrees Fahrenheit. Most of the human enzymes have a maximal activity at pH around 7.2, which is the pH of most body fluids. However, there are exceptions such as, pepsin.

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Renewable energy is generally better for the environment as it produces less pollution.
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True

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How is it possible that over 20 million living organisms on the planet are made up of only 5 types of nucleotide bases arranged
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A piece of metal has a mass of 10 g in a volume of 2 cm to the exponent of three what is the
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Answer:

5g/cm³

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Given parameters:

Mass of the metal  = 10g

Volume of the metal  = 2cm³

Unknown:

Density of the metal = ?

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3 years ago
The image above shows the natural progression of a forest in a process called ecological succession. If a mature climax forest i
liubo4ka [24]

Explanation:

The community may enter primary succession.

Ecological communities are highly dynamic- they gradually evolve. Typically their progression involves:

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The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a climax community. While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.

Like the harvested climax forest, secondary communities do not begin with the removal of soil and all biological life; other species, may be more suited to the altered conditions and begin to modify the area creating a new community.

However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.

Learn more about primary succession at brainly.com/question/1603854

#LearnWithBrainly

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