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musickatia [10]
2 years ago
9

6. species Closely related of orchids never mate in the wild because they bloom at different times. This is an example of ______

________________________________________. (three words)
Biology
1 answer:
Dimas [21]2 years ago
5 0

Answer:

temporal reproductive isolation

Explanation:

The correct answer would be temporal reproductive isolation.

<u>Reproductive isolation</u> generally refers to series of biological mechanisms or processes that prevent members of different species from mating/fertilization or prevent the product of their mating to be invalid.

Some reproductive isolation processes prevent members of different species from mating or prevent fertilization as a result of mating. These processes are known as pre-zygotic reproductive isolation mechanisms.

Some other processes ensure that the product of fertilization (when it occurs) is invalid. These are known as post-zygotic isolation mechanisms.

<em>A good example of the pre-zygotic reproductive isolation process is </em><em>when closely related by different species bloom at different times</em><em>. This will prevent mating or cross-pollination to happen between the different species. This is known as temporal reproductive isolation.</em>

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George has four samples of substances:
tia_tia [17]

Answer:

The answer to your question is sample A and sample C.

Explanation:

Melting point is a physical property of substances, physical properties do not depend on the amount of matter, so it doesn't matter that in one sample we have 5 kg and in the other we have 2 kg.

Besides in samples B and C we have the same amount of matter, they are different substances(copper and iron) so, their melting points are different.

Also, in samples A and D, we have the same amount of matter, but they are different substances so their melting points are different.

5 0
3 years ago
Read 2 more answers
Which pairings match protozoa with the structures they use to move? amoeba: flagellum; euglena: cilia; paramecium: pseudopod amo
lara [203]

Answer:

The correct answer is -  amoeba: pseudopod; euglena: flagellum; paramecium: cilia

Explanation:

Protists use different type of structures for their movement known as pseudopods, flagella, and cillia.

Pseudopods are the structures found in amoeba in which flowing of protoplasm moves the amoeba forward.

A euglena moves by strikes or whip its flagellum, that is a long appendages, like propeller of a helicopter.

Cilia are thin, very small tail-like structure that stretched outward from the of body of paramecium.

Thus, the correct answer is -  amoeba: pseudopod; euglena: flagellum; paramecium: cilia

6 0
3 years ago
the deformity rate in baby birds from nests in pesticide-sprayed fields is compared to the deformity rate in birds from nests in
mr_godi [17]

In natural experiments, the researcher compares groups exposed or not to exogenous agents, but does intervene in group composition or independent variable modification. This is a natural experiment.

<h3>What is a natural experiment?</h3>

There are two types of investigation strategies,

  • Natural investigation
  • Manipulative investigation

In a natural experiment the researcher does not intervene in the creation of treatment and control groups.

There is an exogenous agent, such as a natural phenomenon, that influences the study groups and that acts as the treatment.

The researcher takes advantage of these events to use these random groups to compare them in the study.

The researcher chooses exposed groups (experimental groups) that might have been affected by the natural event and other groups that have not been affected (control groups).

In the exposed example,

  • Exogenous agent ⇒ Treatment ⇒ pesticide use
  • Exposed group ⇒ Experimental group ⇒ birds from nests in pesticide-sprayed fields
  • Not exposed groups ⇒ Control groups ⇒  birds from nests in unsprayed fields.

Since the researcher does not voluntarily modify the independent variable to observe a response in the dependent variable, this experiment could not be considered to be manipulative.

This is an example of a natural experiment in which the researcher chooses groups exposed to different conditions to compare them and analyze the effect of the pesticide.

You can learn more about natural experiment at

brainly.com/question/5001950

#SPJ1

8 0
1 year ago
Give three negative side effects that taking too many antibiotics can have on your body
Pavel [41]

Answer:

they could create bad bacteria and are harder to kill this is called bacterial resistance or antibiotic resistance.

Explanation:

7 0
3 years ago
Read 2 more answers
PLEASE ANSWER URGENTLY!!
dlinn [17]

Answer: Skin; Brain, GSA - General Somatic Afferent

Explanation:

<em>Whilst bushwalking, Brian begins to feel chafing sensation in his thighs. In order to perceive this chafing, neural impulses must travel in one direction – from his </em><em><u>skin</u></em><em> to his </em><em><u>brain</u></em><em>. This information would travel via </em><em><u>GSA </u></em><em>neurones.</em>

The peripheral mechanoreceptors which are found on the skin and used to detect movement will detect the chafing and send it to the brain.

This information will be received by the brain through General Somatic Afferent neurons which are spread across the body and have the primary function of detecting touch and temperature.

8 0
3 years ago
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