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Ronch [10]
3 years ago
8

A student wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. To test this hypothesis, the stu

dent put the same amount of grass seed in 3 containers with the same type of soil. The student measured the growth at the end of the week. All plants received equal amounts of water and sunlight what is the dependant variable
Biology
2 answers:
Murrr4er [49]3 years ago
8 0
The growth rate pretty sure
lesantik [10]3 years ago
8 0

Answer: Growth rate of the grass seeds.

Explanation:

The growth rate is the dependent variable in the experiment because the growth rate of the plants is dependent on the fertilizers. The factor that cannot be changed by the experimenter is known as dependent variable and it is dependent on the independent variables.

The students wants to see the effect of the fertilizers on the growth of the plants.  The fertilizer is independent variable which can be changed by the experimenter.

The plants growth depends on many factors, these factors are fertilizers, amount of light, amount of water, et cetera.

Excluding fertilizers rest of the factors are kept same and are controlled factors.

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natka813 [3]

Answer:

1.  B. carbon dioxide taken in from the surrounding air

2. A. Root

Explanation:

Sugar beet plant carries out photosynthesis and stores the excess of the sucrose in its taproots. During the process of photosynthesis, the plant absorbs CO2 from the air, water from the soil and synthesizes organic sugars in the presence of sunlight.

Atmospheric CO2 contributes carbon and oxygen atoms to the formed sugars which in turn are stored in plant parts. Therefore, atmospheric CO2 makes most of the mass of the photosynthesizing plants such as sugar beets. The taproots of beet plants are modified into storage roots to store the excess of the organic sugars.

7 0
3 years ago
What are two ways scientists use evidence of past environments preserved in rock?
Aleonysh [2.5K]

I think it is A and D (at least those are the ones that made the most sence to me).

7 0
3 years ago
Read 2 more answers
What appears to happen to the two phenotypes from homozygous parents in cause of incomplete dominance ?
Molodets [167]

Answer:

This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.

Explanation:

an example is like if a red and white flower create another flower the flower will be pink because both alleles are dominant and will be phenotypically expressed.

5 0
3 years ago
If frank is using a drug that causes addiction in nearly 75% of those who use it, he is probably ingesting
SVEN [57.7K]

Crack

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8 0
4 years ago
Pioneer species survive by living on rocks and minerals<br> true of false
victus00 [196]
<span>This is true. Pioneer species are introduced to infertile soil so that the soil may become suitable for growing other plant species. These species do not rely heavily on soil; instead, they live on rocks and minerals. Moreover, they break down these rocks into soil so and eventually create a thicker layer of soil, allowing other plant species to inhabit the same region.</span>
7 0
3 years ago
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