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melomori [17]
3 years ago
6

I need science fair project ideas. I am in 9th grade. project has to have a independent and dependent variable

Biology
1 answer:
NeX [460]3 years ago
5 0

Explanation:

please mark as brainlist answers

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Student provides an explanation for carbon dioxide fluctuations for different seasons of the year. ( 2 points)
jeka57 [31]

Carbon dioxide fluctuations occur for different seasons of the year due to the presence of plants in an area.

<h3>Why carbon dioxide fluctuations occur for different seasons of the year?</h3>

The carbon dioxide levels in the atmosphere moves up and down every year when plants use carbondioxide gas through the process of photosynthesis and respiration. Plants take up the carbondioxide gas in the spring and summer season and release it in fall and winter season. In this modern world, the level of carbon cycle is increasing because more carbon dioxide is emitted from burning fossil fuels and other human activities.

So we can conclude that carbon dioxide fluctuations occur for different seasons of the year due to the presence of plants in an area.

Learn more about season here: brainly.com/question/15734021

#SPJ1

3 0
1 year ago
A key concept in all plants is the alternation of generations. This concept illustrates the relationship between morphological f
dalvyx [7]
The sporophyte represents Asexual form of the plant, the gametophyte represents the sexual form of the plant
6 0
3 years ago
Okay, just think Animals
kvasek [131]
Answer: When using fossils approximate age by comparing it to similar rocks and fossils of known ages, is called relative dating.

Using that method we can determine the age of rock layers. That’s our way of dating them.

Hope this helps! ^^
4 0
3 years ago
What does chromantin become during cell division
Sedaia [141]

Answer:

chromantim???

Explanation:

idk idk idk im not genios

3 0
3 years ago
How do you think water and carbon dioxide<br> used for photosynthesis get into the plant's leaf?
Leto [7]

Answer:

The leaves of plants contain openings called stomata, which are used for the exchange of gases. Carbon dioxide, combined with water in photosynthesis, is drawn in through the stomata. Oxygen, a byproduct of the process, is released through these openings, along with water vapor in a process called transpiration.

Explanation:

Hope this helps! :)

4 0
3 years ago
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