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Kamila [148]
3 years ago
8

Three billion years ago plants began the process of photosynthesis. Why would

Biology
1 answer:
zmey [24]3 years ago
8 0

because a chemical reaction began to happen at a very big rate which uses CO2 as a reactant and O2 as product

6CO2+6H20--->C6H12O6+6O2

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Which best describes the limits of science?
vichka [17]

A. Science cannot answer philosophical questions. Philosophical questions could be described as rheoretical questions, such as "what is the purpose of life?" These questions' answers can very from person to person. Science answers questions such as "what is the boiling point of water?", or "what is the chemical structure of water? These are both questions that have the same answer, no matter who is asking them. You just have to have the ability to accurately measure and observe the things involved, or in this case, the temperature of the water when it starts to boil or whe different atoms in the water.

Let's examine the other questions.

B. science can answer only mathematical questions. As you saw in the explanation above, science can also answer other questions, as long as they have a definite answer that we can accurately measure.

C.Science can answer any questions. Again, we have already saw that science cannot answer philosophical questions, so science cannot answer any question.

D. Science can answer any difficult questions. As with the example of the chemical stucture of water, we can answer difficult questions with science. This may seem simple to you, but it would be very difficult if it was not already known!


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3 years ago
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Animals that live at the edge of the ocean are adapted to life in the... Zone
Kryger [21]
The Littoral Zone

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7 0
3 years ago
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Facilitated diffusion allows certain kinds of compounds that are normally blocked by the cell
Viefleur [7K]

Answer:

Potassium

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All of the options are compounds, except for potassium which is an element

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The nearest organ to which the heart supplies oxygenated blood is​
Damm [24]

Answer:

Myocardium

The Heart itself. The nearest organ is the blood supplied to the Myocardium (Heart muscle) by the Heart pumping oxygenated blood through the Coronary Arteries.

3 0
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Put numbers in the boxes to arrange the following statements in the order that they happen.
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Answer:

[3 ] pollination

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