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3 years ago

Which of the following organisms are important producers for marine food chains?

Biology

2 answers:

julsineya [31]3 years ago

7 0

What are the choices?

alisha [4.7K]3 years ago

5 0

Phytoplankton is the Answer

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Which of the following is a macronutrient?<br> A) iron B) boron C) Calcium D) Manganese

ioda

C. calcium is your answer

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3 years ago

What part of the body uses active transport to take up nutrients after concentration has reached equilibrium

jekas [21]

The villi of the small intestine use active transport to take up nutrients after concentration has reached equilibrium.

<h3>What is Active transport?</h3>

Active transport may be defined as the process that occurs against the concentration gradient and is mediated by carrier proteins. Metabolic energy is used to move ions or molecules against a concentration gradient.

During the process of digestion, the villi in the small intestine enthrall the soluble nutrients gradually. Over time, the concentration of nutrients in the villi acquires an equilibrium with the concentration in the gut. Until here, the nutrient uptake is carried by the process of passive diffusion.

But after attaining the equilibrium, the nutrient uptake is carried by the process of active transport.

The complete question is as follows:

What part of the body uses active transport to take up nutrients after concentration has reached equilibrium?

Lungs
Stomach
Small intestine
Liver

Therefore, the correct option for this question is C, i.e. small intestine.

To learn more about Active transport, refer to the link:

brainly.com/question/18434867

#SPJ1

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2 years ago

What is the layer of bedrock that is near Earth's surface that forms a continuous shell around Earth called?

Sergeu [11.5K]

The layer of bedrock is called LITHOSPHERE.
Lithosphere is the rigid outer part of the earth which is made up of crust and upper mantles.The geologic processes that usually occur on the earth surface such as earthquakes are originated from the lithosphere. The lithosphere is bounded by the atmosphere above and the asthenosphere below.

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4 years ago

How do we characterize an air mass that forms over land?<br> O dry<br> O wet<br> O cold<br> O warm

lana66690 [7]

Wet because the mass in air is water like evaporation and condensation

7 0

3 years ago

Read 2 more answers

Describe the role of smooth muscle in two human body systems other than the cardiovascular system.

Ahat [919]

<h2>Human Body Systems</h2>

Explanation:

Cardiac and skeletal muscle and cardiac(heart) are both striated in appearance, while smooth muscle isn't.
Both Cardiac and smooth muscle are automatic while <em>skeletal muscle is deliberate.</em>
Cardiovascular muscle is likewise an automatic muscle yet is progressively associated in structure to skeletal muscle, and is discovered uniquely in the heart.
<em>Smooth muscles move nourishment through the stomach related tract.</em>
In one's eye the pupillary sphincter muscles is answerable for contracting the size of the student.
<em>Smooth muscle developments keep up the supply routes' breadth. Smooth muscle controls wind stream in lungs. </em>
Heart muscles are striated not normal for smooth muscles.
<em>Cardiovascular muscles are found in the heart dividers and aorta while smooth muscles are found in most of blood vessels and internal organs.</em>

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3 years ago

Read 2 more answers