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Evgesh-ka [11]
3 years ago
14

Which of the following is a biotic factor in an ecosystem?

Biology
1 answer:
maria [59]3 years ago
6 0

Answer:

tree leaves

Explanation:

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A client with the diagnosis of obsessive-compulsive disorder attends a day treatment program. the client feels that her hands ar
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The immediate intervention for this client is to let her limit the number she washes her hands a number of times. The advice is not to illuminate but reduce so that the client still cope with the feeling of anxiety while aiming why handwashing is not necessary. Also there is a need of washing the hands for instance after toileting.  

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3 years ago
What's the definition of science
Reil [10]
Science<span> is the study of the nature and behavior of natural things and the knowledge that we obtain about them
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6 0
3 years ago
Each biological species is genetically isolated from other species. why do the species evolve independently?
Nookie1986 [14]
Species evolve independently possibly due to geographical isolations or behavioural isolations.

Geographical isolation includes the isolation of 2 groups of the same species. Since these 2 groups live in different locations, (e.g. a volcanic eruption resulting in a barrier between one side of an ocean and another side of the ocean), they will have different selection pressures in their different environments as well (e.g. one side of the ocean may have more sunlight and thus more underwater plantations than the other side of the ocean). Natural selection will eliminate those with disadvantageous characteristics (e.g. Fishes that only eat plants and nothing else on the side of the ocean with little plantations) with unfavourable alleles, and select for those with advantageous characteristics (e.g. Fishes are able to eat plants and other organic substances as well on the side of the ocean with little plantations) with favourable alleles.

Since the 2 groups have different selection pressures, natural selection will occur in different ways, selecting for and against different types of fishes with different types of alleles. Also, because of the barrier, they are not able to mate with each other, and there are no mixing of genes from one side of the ocean and the other side. They are genetically isolated. As genetic drift occurs over time, their gene pools become different from each other. Thus, they evolve independently.

Hope this helps! :)
7 0
3 years ago
Which statement explains how convection currents affect the movement of plates? Gravity pulls one edge of a plate down into the
ArbitrLikvidat [17]

Convection currents direct the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle.

In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading.

So, I would say the answer is:

As convection currents drift across the oceans,

they bring the pieces of Earth's crust with them as the supercontinent breaks apart.

Glad I could help, hv a good day :)

7 0
3 years ago
Read 2 more answers
In flies, red eyes (R) are dominant to brown eyes (r). A heterozygous fly is crossed with a homozygous recessive fly
hichkok12 [17]

Answer:

The cross of a heterozygous fly with a homozygous fly can be shown as follows:

         r            r

R      Rr           Rr

r        rr            rr

The results show that there is a 50% probability that the flies produced will have red eyes. Their genotypes will be heterozygous.

The results of the punnet square show that there will be a 50% probability that the offsprings will have brown eyes. Their genotype will be homozygous recessive.

A homozygous trait can be described as a trait which has same alleles for the gene which encodes the trait. Heterozygous means that both the alleles for the trait will be different.

7 0
3 years ago
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