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Semenov [28]
3 years ago
6

Would an observational study or an experiment be more appropriate to investigate the effects on fertilizer on plant growth? Expl

ain.
Biology
1 answer:
Goryan [66]3 years ago
6 0

Answer:

Experiment

Explanation:

For such an investigation an Experiment would be the better option. This is because in an experiment you would have both an experimental group and a control group. This would allow you to use fertilizer on one but not the other, therefore, providing seperate results that you can use to compare with one another. This ultimately helps you determine the actual effects that fertilizer has on the growth of plants, since the fertilizer would be the only variable in the experiment. An observational study would only allow you to observe the plants in a natural scenario, without interfering and seperating the plants into different groups with different environments.

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Two species of closely related frogs are found in the same pond high in the Andes of South America. Both species only have teeth
IgorLugansk [536]

Complete question:

Two species of closely related frogs are found in the same pond high in the Andes of South America. Both species only have teeth on the top jaw. One has small teeth for holding small live prey prior to swallowing. The other species has very large sharp teeth for injuring and killing large prey prior to biting off pieces of flesh for consumption. The above is an example of:

  • Directional selection
  • Analogous structures
  • Character displacement
  • Hybridization
  • Vestigial structures

Answer:

  • Character displacement

Explanation:

Competition is an ecological and evolutive process very common in nature. Competition might be intra- or interspecific. Competition between different species in a community or ecosystem might be due to the same resource use, or the same territory, shelter, etcetera. When a resource is useful for two or more species, and limited, they compete to gain it.

The principle of competitive exclusion states that different species with the same requirements sharing the niche can not coexist indefinitely based on the same limited resource. When <u>two competing species coexist, this is because of niche partitioning or niche differentiation</u>.

Differentiation of effective niche is closely related to <u>character displacement.</u>

<u>Character displacement</u> is the result of interspecific competition, in which two or more species that live in the same habitat manage to avoid competition by developing different traits. Morphological divergence, or any adaptative trait development, fixated genetically, is the product of niche segregation. Species tend to differentiate morphologically in the presence of strong competitors. Traits divergence favors coexistence in the same place.

In the exposed example, both species live in the same pond. But to avoid competition and competitive exclusion, species developed different teeth sizes to feed on different prey items.  

8 0
3 years ago
The English words archaeology and archetype are derivatives of the Greek word arkhaios. Based on this information, what is the m
egoroff_w [7]
The most likely meaning of this world would be c - ancient. This is probably true because when you think about it, when you're talking about an archetype, you're not talking about something dead nor extinct, neither about ruins, but you might be talking about something ancient - and the same goes for archaeology.
8 0
3 years ago
Please help with my biology
astraxan [27]

1. Plantae

2. Kind

3. Genus

4. Gymnosperms

5. Prokaryotes

5 0
4 years ago
Kidneys play a major role in the human excretory system by filtering what fluid?
Lady bird [3.3K]

Answer:

Explanation:

Healthy kidneys filter about a half cup of blood every minute, removing wastes and extra water to make urine. ... Your kidneys, ureters, and bladder are part of your urinary tract. You have two kidneys that filter your blood, removing wastes and extra water to make urine.

5 0
3 years ago
Read 2 more answers
What is the cytoplasm​
LenaWriter [7]
Cytoplasm is a jelly like substance that gives the cell its shape. All the organelles of a cell are located inside the cytoplasm
5 0
3 years ago
Read 2 more answers
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