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3 years ago

Human activity, such as the burning of coal and oil, refining petroleum in factories has impacted which of the following

Biology

2 answers:

alisha [4.7K]3 years ago

6 0

Answer:

carbon cycle

Explanation:

Zarrin [17]3 years ago

4 0

Answer:

carbon cycle

Explanation:

Carbon is an essential element in the bodies of living organisms. It is also economically important to modern humans, in the form of fossil fuels.

Carbon dioxide—\text {CO}_2CO

start text, C, O, end text, start subscript, 2, end subscript—from the atmosphere is taken up by photosynthetic organisms and used to make organic molecules, which travel through food chains. In the end, the carbon atoms are released as \text {CO}_2CO

start text, C, O, end text, start subscript, 2, end subscript in respiration.

Slow geological processes, including the formation of sedimentary rock and fossil fuels, contribute to the carbon cycle over long timescales.

Some human activities, such as burning of fossil fuels and deforestation, increase atmospheric \text{CO}_2CO

start text, C, O, end text, start subscript, 2, end subscript and affect Earth's climate and oceans.

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Enzymes only work with certain substrates. If a certain enzyme only works with a certain substrate, it is because the enzyme Gro

MissTica

Answer:

has a particular shape that matches the substrate

Explanation:

Enzymes are proteinous biological catalyst i.e. they speed up the rate of biochemical reactions in living systems. Like every other catalyst, enzymes reduce the activation energy of the reactions they are involved in without getting used up in the process.

Enzymes operate by binding to a substrate molecule i.e. the reactant and form a bond with them in order to synthesize a product. However, enzymes are substrate-specific i.e. they are very particular about the substrate they bind to. This property is due to the shape of the enzyme which matches a particular substrate.

Enzymes, like every other protein molecules, are made up of amino acid subunits, which are responsible for the shape that determines the specificity of the protein.

3 0

4 years ago

A Three-leaf clover is dominant (T) to four leaves (t). What is the probability of an offspring having 4 leaves when you cross a

SVETLANKA909090 [29]

Answer:

%50

Explanation:

Heterozygous = 2 different alleles (Tt)

4 leaf clover = 2 recessive alleles (tt)

T is dominant over t, so with the combination of Tt three leaves are expressed, rather than four leaves

For a recessive trait (four leaves) to show 2 recessive alleles are needed

To find the percentage of the offspring to have four leaves a punnet square should be created

To find the percentage divide the number of four leaf offering with 4 and multiply by 100

2÷4×100=50

= 50%

4 0

3 years ago

Read 2 more answers

What formed<br> during the Paleozoic era

olga_2 [115]

The era began with the break up of one super continent and a formation of another one...
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8 0

4 years ago

I need an answer for this ASAP!!

NISA [10]

Answer:

the answer is the second one

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3 years ago

Most energy enters ecosystems in the form of sunlight.true or false

Olin [163]

True!
Most energy enters ecosystems in the form of sunlight. Plants convert solar energy to chemical energy in the form of sugar. This energy will leave the ecosystem as heat energy.

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3 years ago

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