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Alla [95]
3 years ago
14

What forces act on.a leaf as it is falling from a tree

Biology
1 answer:
Darina [25.2K]3 years ago
7 0
Gravity of the earth =  9.78 m/s² and frictional force due to air
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an unknown cell was identified as being eukaryotic. what structure was identified to positively confirm this?
stealth61 [152]
The nucleus, it is present in eukaryotes but not prokaryotes. Eukaryotes="true" nucleus. Prokaryotes="no" nucleus
3 0
3 years ago
A solution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. Wha
mario62 [17]

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When a substrate is added in water, the enzyme will cause the substrate to dissolve in water. Increase in temperature will cause better functioning of the enzyme and more solute to be dissolved until an optimum temperature. Optimum temperature can be described as the temperature at which the activity of the enzyme is highest.

After optimum temperature is reached, the enzyme will get denatured and the substrate will no longer be able to dissolve in water.

8 0
3 years ago
Darwin’s theory of evolution is based on
Marizza181 [45]

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Darwinism is a theory of biological evolution developed by the English naturalist Charles Darwin (1809–1882) and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce.

Explanation:

3 0
3 years ago
Describe the stages of photosynthesis. Use the terms thylakoid, light-dependent reactions and light-independent reactions.
KatRina [158]

Photosynthesis in plants occurs in two stages. These stages are known as the light-dependent reactions and the Calvin Cycle.

The first stage of photosynthesis is the light dependent reactions.  These reactions take place on the thylakoid membrane inside the chloroplast.  During this stage light energy is converted to ATP (chemical energy) and NADPH (reducing power).

<span>The second stage of photosynthesis is the Calvin Cycle.  These reactions occur in the stroma of the chloroplast.  Energy from ATP and electrons from NADPH are used to convert carbon dioxide into glucose and other products.</span>

7 0
3 years ago
Is it better to vaccinate people or to wait until they build their own immunity? explain.
uranmaximum [27]

<em><u>It</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>good</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>vaccinate</u></em><em><u> </u></em><em><u>people</u></em><em><u> </u></em>

<em><u>but</u></em><em><u> </u></em><em><u>after</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>vaccination</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>too</u></em><em><u> </u></em><em><u>,</u></em><em><u> </u></em><em><u>important</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>boast</u></em><em><u> </u></em><em><u>their</u></em><em><u> </u></em><em><u>immunity</u></em><em><u>.</u></em><em><u>.</u></em>

Explanation:

<em>Because</em><em> </em><em>of</em><em> </em><em> </em><em>build</em><em> </em><em>their</em><em> </em><em>immunity</em><em> </em>

<em>it</em><em> </em><em>can</em><em> </em><em>help</em><em> </em><em>to</em><em> </em><em>fight</em><em> </em><em>with</em><em> </em><em>other</em><em> </em><em>diseases</em><em>.</em><em>.</em><em>.</em><em>.</em>

<em>hope</em><em> </em><em>it helps you</em><em>:</em><em>)</em>

5 0
3 years ago
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