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xz_007 [3.2K]
2 years ago
6

9) Many gardeners use a chemical weed-killer to control plant pests in their gardens. However, many weeds have begun to develop

a resistance to these chemical poisons. This is an example of _________________ in action.
Biology
2 answers:
ira [324]2 years ago
3 0
Could be adaption????
Diano4ka-milaya [45]2 years ago
3 0

Answer:

This is an example of natural selection in action.

Explanation:

    The action of natural selection consists in selecting individuals more adapted to a given ecological condition, eliminating those disadvantaged for that same condition. The most appropriate expression refers to the greater probability of a given individual surviving and leaving descendants in a given environment.

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Answer:

The law of conservation of matter and energy states that matter is neither created nor destroyed but conserved. They can only rearrange the matter and energy. For example, an oxygen atom will cycle through a living system.

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A scientist plans to find out if dams harm a river ecosystem. He interviews 500 environmentalists and 450 of them believe that d
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The scientists' conclusions are most likely unreliable because <u>he asked the wrong set of people for his survey.</u> By definition, environmentalists are those people who are inclined to believing that humans are entirely responsible for creating biological foot prints all over the Earth. They always advocate the protection of the environment and even persuade people to follow suit. It is natural for them to react in such a manner that they find dams as something harmful because to them, dams destroy the natural cycle of Mother Earth.
5 0
3 years ago
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Most of the neurons in the human brain are
irinina [24]
Most of the neuron cells in our brains are interneurons
8 0
3 years ago
Can someone please help on these two question Please I don't get this at all I'm really confused
marissa [1.9K]
Alleles are letters that represent dominant and recessive traits.

A capital letter represents a dominant trait
A lowercase letter represents a recessive trait.

Dominant traits over shadow the recessive ones. This is known as complete dominance.

Referring to your questions let's us the alleles HH, Hh, and hh for the height of the pea plants.

But what do those letters mean?

HH = homozygous dominant (Tall)
Homo means same.

hh = homozygous recessive (Short)

Now this is different: here's Hh.
There's a capital AND lowercase letter.
This means that the plant carries the gene for tall and short plants, and can pass on either trait to the offspring.

BUT the dominant always over shadows the recessive. So Hh is a tall plant.

Hh = heterozygous (hybrid) (Tall)
You can interpret hetero meaning different.

Now I hope you're with me!

For question two it asks if a short plant can ever be a hybrid.
Referring to what I just said, that answer would be no.
Because there is no dominant trait to over shadow the recessive.

And short plants have the hh alleles, and they are homozygous NOT heterozygous (hybrid).

I hope this helps, and makes sense! If you have any questions please let me know. Genetics can be confusing.
8 0
3 years ago
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