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3 years ago

Ecologists often use modeling, instead of field studies, because it

Biology

1 answer:

Dmitrij [34]3 years ago

6 0

allows them to control all of the variables involved.

Explanation:

Ecologists often use modelling instead of field studies because it allows them to control all of the variables involved.

It is very difficult or nearly impossible to control the variables when we carry out field studies.

Ecology is a science that studies the relationship between organisms and their environment.

A model is an abstraction of the real world.
It helps us take a part of the real world and understand them better.
Since we are in control of a model, it is possible to change some parameters to help better understand their controls on others.
Models are simply flexible because they be controlled and better understand the complex realities posed during a field study.

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Bohr atomic model brainly.com/question/4986277

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6. Endocrine glands ________. a. secrete hormones that travel through a duct to the target organs b. release neurotransmitters i

grandymaker [24]

Answer:

The correct answer is option C. secrete chemical messengers that travel in the bloodstream.

Explanation:

Endocrine glands are organ or gland that secrets hormones that are chemical messengers travel through the bloodstream instead of the duct. There are several glands that are part of the endocrine system such as the thyroid gland, pancreas, hypothalamus, and others.

These chemical agents are the travel through the blood and act on the site of action.

Thus, the correct answer is option C. secrete chemical messengers that travel in the bloodstream.

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3 years ago

Gas exchange occurs by the process of .

creativ13 [48]

Answer: Basic Principles of Gas Exchange

Gas exchange during respiration occurs primarily through diffusion. Diffusion is a process in which transport is driven by a concentration gradient. Gas molecules move from a region of high concentration to a region of low concentration.

Explanation:

Gas Exchange with Tissues

Gas exchange occurs in the alveoli so that oxygen is loaded into the bloodstream and carbon dioxide is unloaded from the bloodstream. ... Oxygen diffuses into the cells of the tissues, while carbon dioxide diffuses out of the cells of the tissues and into the bloodstream.

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7 0

3 years ago

Read 2 more answers

WILL GIVE BRAINLIEST!!!!!!!

s344n2d4d5 [400]

Answer:

The first option

Explanation:

The first option because in the water cycle, water does not change chemically but, it changes its physical form throughout the cycle. In other chemical cycles ,the element (such as carbon) changes chemically throughout its cycle making it the main difference between the water cycle and other chemical cycles.

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4 years ago

Read 2 more answers

A child is born with sickle cell anemia. What can you conclude about the potential genotypes of the parents?

AlexFokin [52]

Answer:

The potential parental genotypes could be "both recessive" or "both heterozygous".

Explanation:

Sickle cell anemia is a disease where there are not enough red blood cells throughout the body so they are not able to carry the necessary amount of oxygen for the body to function properly. It is a disease that is carried on recessive genes so for an individual to have this disorder, they must have to recessive genes from both parents. In this case the potential parental genotypes could be "both recessive" or "both heterozygous".

I hope this answer helps.

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3 years ago

4. When was the first STS mission? O 1958 O 1969 0 1981

faust18 [17]

Answer:

1981

Explanation:

"A new era in space flight began on April 12, 1981, when Space Shuttle Columbia, or STS-1, soared into orbit from NASA's Kennedy Space Center in Florida."

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3 years ago