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AleksAgata [21]
3 years ago
9

Which element has exactly 29 electrons and is in period 4

Biology
1 answer:
natima [27]3 years ago
8 0
I believe it is copper.
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NNADVOKAT [17]

Answer:

Nitrogen is present in the atmosphere in a molecule form about 78 percent. This nitrogen comes to the earth with the water through rainfall. Some nitrogen fix by beneficial microorganisms such as Cyanobacteria and Azotobactor which are present in the roots of higher plants. These microorganisms convert nitrogen molecule into nitrates and used by the plants. There are some other microorganisms which again convert nitrate into nitrogen molecules, called denitrifying bacteria and nitrogen molecule goes to the atmosphere again and complete the cycle.

4 0
3 years ago
The “Food Factories” in plant cells are called
Rufina [12.5K]

In most plants, the leaves are the main food factories. They capture the sun's energy with the help of chlorophyll in the leaf cells. The chlorophyll traps and packages the energy from the light of the sun in a process called photosynthesis. Leaves usually have a large surface so they can collect the most sunlight.

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3 years ago
What is an adaptive radiation? A. a kind of mutation caused by radiation B. a cluster of similar adaptations in a species C. a r
OlgaM077 [116]
Your answer is C: A rapid increase in the number of related species 
8 0
3 years ago
Question 17 of 25
poizon [28]

Answer:

B

Explanation:

<em>Respiration </em><em>can </em><em>happen</em><em> </em><em>without</em><em> </em><em>sunlight</em><em>,</em><em>but </em><em>photosynthesis</em><em> </em><em>cannot</em><em>.</em><em>a</em><em>n</em><em>d</em><em> </em><em>photosynthesis</em><em> </em><em>doesn't</em><em> </em><em>take</em><em> </em><em>place </em><em>at </em><em>night</em><em>,</em><em>so </em><em>less </em><em>carbon dioxide</em><em> </em><em>is </em><em>used </em><em>up </em><em>than </em><em>it </em><em>is </em><em>produced</em><em>.</em>

<em>I </em><em>hope</em><em> this</em><em> helps</em>

6 0
3 years ago
Which states of matter is water in during the water cycle?
Andre45 [30]

Answer:

Explanation:

The water cycle is the path that all water follows as it moves around our planet.

3 0
3 years ago
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