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algol13
3 years ago
14

Why have pesticide producers failed to produce new mosquito-killing insecticides in recent years?

Biology
1 answer:
maria [59]3 years ago
4 0
The answer is the problem of resistance. Mosquitos have proven to be resilient to pesticides treatment hence becoming more dangerous and harder to eradicate. This is due to the fact that the pesticides are inducing mutation in their genes hence giving them resistance. This is why no-pesticide-control of mosquitos, such as the use of nets, is becoming the best option in mosquito control.
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is the study of effects of sunlight on the color of construction paper an experiment in quantitative data?
Misha Larkins [42]
No, studying the effects of sunlight on the color of paper would be an experiment in qualitative data. Quantitative data is based on numbers, a change in appearance is qualitative data. 
4 0
2 years ago
(b) Identify the dependent variable in the experiments. Identify a control group missing from the second experiment. Justify the
hammer [34]

Hello. You have not submitted the experiments to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.

A dependent variable is one that is influenced by an element, in order to present a result, that is, it is a variable that does not establish itself, being dependent on another variable to establish itself. An example of a dependent variable can be seen in an experiment that seeks to determine the differences in growth rates of bean plants that were fertilized with different organic fertilizers. As you can see, this is an experiment where the different organic fertilizers influence differences in the growth rate of bean plants. Thus, the growth of these plants depends on the fertilizer, this growth being the variable dependent on the experiment.

A control group, in turn, is an element of the experiment that does not receive the element that is being tested in the same experiment. The control group is important, because it allows the researcher to see the results of a system where the tested element does not exist, thus being able to determine the real differences that the tested element is capable of causing. Using the same example presented in the paragraph above, we can see that the different organic fertilizers are the elements tested in the experiment. These fertilizers will be applied to the plants, however it is important that at least one of these plants does not receive any fertilizer, so that the difference between a system with fertilizer and a system without fertilizer can be evaluated. This plant that received no fertilizer is the control group.

4 0
2 years ago
In terms of adaptation, what advantage does sexual reproduction provide for species
KengaRu [80]
Unlike other ways of reproduction, sexual reproduction provides variation through inheriting various genes. This variation is essential for adaptation as it would not just create a copy of the original life form, but rather a different unique life form that could adapt to something, and then have it's own offspring with the adapted trait.
8 0
3 years ago
I need help
Mnenie [13.5K]

Answer:

A. Sediment

Explanation:

As water flows, it both breaks down rocks and picks up soil. When the pieces of rock and soil are travelling in water, they are called sediment.

3 0
3 years ago
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8_murik_8 [283]
Eukaryotic cells have the ability to absorb other cells by phagocytosis. 
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3 years ago
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