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crimeas [40]
3 years ago
6

If you wanted to add decomposers to a diagram of an energy pyramid that contains producers and primary and secondary consumers w

hich trophic level(s) would be affected
A.) producers only
B.) producers and primary consumers
C.) all trophic levels
D.) all consumers
Biology
1 answer:
AlladinOne [14]3 years ago
5 0
The answer is All trophic levels : )
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Give the atomic number, electron configuration and the number of valence electron if the following elements:
marishachu [46]

Answer:

Atomic number: 13

Electron Configuration:[NE] 3s²3p¹

Valence electron: 3

5 0
3 years ago
LINNAEUS classified organisms into two kingdoms. How was his system of classificationImpacted after the invention of the microsc
andre [41]

The correct answer is option C, For more kingdoms were introduced

Linnaeus  was the first to develop a system of classification of living things. He mainly grouped the living things into animal or plant kingdom, but later with the advent of microscope it became easy for the researchers to observe microscopic beings and thus three new kingdoms were proposed namely- fungi, protists (considered as simple organism) and monera (bacteria).  

Not only this with in a kingdoms comes several phylum, these phylums were also reorganized and recategorised based on the discovery of more categories and subcategories.  

7 0
3 years ago
Read 2 more answers
Many voluntary associations are controlled by
Juliette [100K]
It is the motor cortex of the brain that controls the voluntary movements of the body. It is in the rear part of the frontal lobe and is a region in the cerebral cortex.  It is responsible for planning, control and the execution of the voluntary movements in the body. 
6 0
3 years ago
Please help this is due tomorrow.
velikii [3]

Explanation:

<h2>Answer:-</h2>

In case of Figure A and B,

  • The work is being done perpendicular against the gravity. And we know that when work is done perpendicular to gravity, then zero work is done.

For Example:-

We also need to know that work done in circular motion is zero.

So, work done by electron to orbit around a proton is also zero.

:)

7 0
3 years ago
The advantage of a closed circulatory system over an open circulatory system is that
Ber [7]
Hello friend!!

Circulation-<span>is the movement of substances such as nutrients and gases within blood vessels and cavities throughout the body.

</span>

Not all animals have a circulatory system.                                                      Poriferans, cnidarians, platyhelminthes and nematodes (nematodes have pseudocoelom fluid but no vessels) are avascular animals. Echinoderms do not have true circulatory systems either.

In animals that do not contain a circulatory system, the transport of substances occurs by cell to cell diffusion.

Blood is a fundamental means of substance transport for larger animals since, in these animals, tissues are distant from each other and from the environment thus making diffusion impossible.

Circulatory systems can be classified into open circulatory systems and closed circulatory systems.

An open circulatory system is one in which blood does not circulate only inside blood vessels but also flows into cavities that irrigate tissues. In open circulatory systems, blood pressure is low and generally the blood (called hemolymph) has a low level of cellularity.

Arthropods, molluscs (cephalopods are exception) and protochordates have open circulatory systems.


A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason, the blood pressure is higher in animals with closed circulatory systems. The cellularity of the blood is also higher, with many specific blood cells.

Closed circulatory systems are a feature of annelids, cephalopod molluscs and vertebrates

A closed circulatory system is more efficient. Since blood circulates only inside blood vessels, it has a higher pressure and, as a result, can travel greater distances to the organs where hematosis happens and to peripheral tissues. In addition, the higher circulatory speed increases the animal’s capacity to distribute large supplies of oxygen to tissues that consume it in large amounts, such as muscle tissues, which can then perform faster movements. Animals with an open circulatory system (with the exception of insects, which carry out gas exchange separately from circulation) are generally slower and have a low metabolic rate.


<span>In insects, the circulatory system is open but this system does not participate in the gas exchange process or in oxygen supply to tissues. Gases enter and exit through the independent tracheal system, which allows for the direct contact of cells with the ambient air. Therefore, an insect can supply the large oxygen demand of its fast-beating wing muscles even though it has an open circulatory system.</span>

<span>
</span>

<span>Hope It helps!!</span>

<span>All the Best!!</span>

7 0
3 years ago
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