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NARA [144]
2 years ago
5

What is the role of phytoplankton in a pond ecosystem?

Biology
1 answer:
lyudmila [28]2 years ago
4 0
Plankton exists near the bottom of the ocean's food chain and provides nutrition for whales, shrimp, snail, and jellyfish. Plankton also plays an important role in the carbon cycle by removing inorganic carbon dioxide due to photosynthesis. 
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Which statement describes an advantage of asexual reproduction?
nydimaria [60]

Answer:

i would pick the answer c

Explanation:

sexual reproduction is slower than asexual reproduction because in order to reproduce sexually, you would need to find a partner first. but reproducing asexually is quicker because you don't need a partner

3 0
3 years ago
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Describe the role of the following in maintaining a constant body temperature in humans
andriy [413]

Answer:

Humans maintain a body temperature of 37oC; .

If the temperature is above or below 37oC, the hypothalamus receives information from thermo receptors in our skin and sends electrical impulses, along nerves, to the parts of the body which have the function of regulating our body temperature

8 0
3 years ago
Which of the following describes what might happen with a sudden increase in precipitation in the grassland biome?
melomori [17]
I'd say the answer is C Increase in plant and animal diversity.

Because grasslands are usually too dry for certain plants and animals to live there, but with more precipitation more organisms would live there.
7 0
3 years ago
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Item 8
Alecsey [184]

Answer:

D) found in a limited time span

Explanation:

Index fossils are the remains of living organisms for which we have already established relative age. These are fossils that only existed during a limited period of geologic time and are easily identified, found in large volumes, and found in many different locations around Earth. Due to these factors, index fossils may be used as a guide for comparison in determining the relative age of an unknown object.

have a nice day and mark me brainliest! :)

7 0
3 years ago
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In simple staining with a basic dye, do the gram-positive and gram-negative bacteria differ in retaining color?
Dmitriy789 [7]

Answer:

The above shows the procedures of the Gram's staining method, The result and important of colour in differentiating the bacteria. A little insight into staining endospore.

Explanation:

Stainings is a reagent or dye used to stain microscope specimens so as to make some structures visible.

Peptidogycan is a derivative polymer of glycan and peptides found in bacterial cell walls and varies in compositional concentration from species to species.

Cell wall- A thick, fairly rigid, layer formed around individual cells of bacteria, Archaea, fungi, plants, and algae (but not animals and other protists which generally have cell membranes without cell walls). The cell wall is external to the cell membrane and serves a structural function helping the cell maintain its shape and protecting the cell from damage.

There different types of staining techniques and classification based on the aim of the experiment and here is a few;

The etymology is from Gram + positive, is named after Dan ish bacteriologist Hans Christian Gram, who invented the Gram staining technique.

Used in bacteriology , bacteria that stains dark blue or violet after Gram staining, due to large quantities of peptidoglycan in the cell wall are gram positive.

And gram-negative bacteria is one that is not stained violet by Gram's method.

A spore is thick resistant particle produced by a bacterium or protist to survive in harsh or unfavorable conditions.

Spore staining (malachite green) however can be used to differentiate sporulating bacteria species.

The above shows the procedures of the Gram's staining method, The result and important of colour in differentiating the bacteria. A little insight into staining endospore.

8 0
2 years ago
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