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TiliK225 [7]
3 years ago
12

A farmer wants to know the effects of a new fertilizer on his crop of butter beans. One year, he fertilizes

Biology
2 answers:
Diano4ka-milaya [45]3 years ago
8 0
Group d, to be able to see what each does to the plant, you need to know what nothing does to it
In-s [12.5K]3 years ago
8 0

Answer:

The correct answer will be option-D.

Explanation:

In a scientific experiment, the experiment is performed by dividing the sample into two groups- control and experimental.

In the control group, the samples are not treated with the variable being studied in the study that is it acts as an alternative to which the experimental samples in which the treatment is provided.

In the given question, since the effect of fertilizer on crops is being studied, therefore the fertilizer is the variable to be studied. So the crop with no fertilizer will be considered as a control group.

Thus, option-D is the correct answer.

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•Address the letter to the editor of a local newspaper.
Julli [10]

The answer is; hydrothermal, geothermal, and wind

Hydrothermal, taped from the biggest river on the state contributes approximately 60% of the energy in the state. Geothermal is second,approximately 30% while wind power contributes approximately 10%.


The costs of the electricity in the state are relatively cheap compared with states whose main source of energy is hydrocarbon fuels.   Geothermal power is the cheapest (even though initial investment is prohibitive). Hydrothermal is slightly expensive than geothermal due to the maintenance required and also  is prone to fluctuations of the river regime. Winds are also cheap but initial investment if the wind farm is high.



Hydrothermal energy has the biggest environmental impact compared to the other two. Due to the walls of the dam on the river, migration of some aquatic species is impeded. The reduced flow of water (and sediments) downstream of the dam also impact these ecosystems. Geothermal and wind energy sources have a very minimal environmental impact on the environment .


The state could increase electronics with low power consumption (such as LED lights) in the market for availability to the population. This would be followed by a sensitization campaign on the ideal use of power in the household to conserve power when not in use.


4 0
2 years ago
Which is a characteristic of all vertebrates?
Bond [772]

The presence of vertebral column or notochord at any stage of life in any organism is the characteristic of vertebrate.

Explanation:

An animal is vertebrate if it fulfils the following criteria:

Presence of vertebral column or notochord.

Presence of endoskeleton or backbone.

The spinal cord runs above the vertebral column.

Humans embryo has notochord which becomes a vertebral column.

The alimentary canals end in the anus.

Mouth is present ta the anterior side of the vertebrate.

Have legs, fins or wings for movement.

Presence of a nervous system and sensory organs.

Presence of skin, lungs or gills.

Presence of a circulatory system.

Vertebrates include fish, amphibians, reptiles, birds and mammals.

6 0
3 years ago
Time doesn’t really Heal the heart. It just makes the heart forget all the pain.​
GrogVix [38]

Answer:

good one

Explanation:

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5 0
2 years ago
A fossil is found that shows the organism that produced it had a skeleton and also suggests that the organism may have had hair
Schach [20]
I believe it is the second option 
Eukaryota and most likely produces milk to feed its young
8 0
3 years ago
Read 2 more answers
During the process of only specific parts of the DNA are activated; the parts of the DNA that are activated
kenny6666 [7]

Answer B And C

The decoding of information in a cell's DNA into proteins begins with a complex ... use different sets of catalysts to express only specific portions of these instructions to ... that the process of DNA replication be as accurate as possible (Figure 1). ... number depends on how active a particular cell is in synthesizing proteins.

Explanation:

8 0
3 years ago
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