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olga2289 [7]
3 years ago
11

Explain why a food web is a more realistic model of energy flow than a food chain.

Biology
2 answers:
svp [43]3 years ago
8 0

it includes more organisms in the ecosystem that would otherwise not be shown in a food chain.

love history [14]3 years ago
5 0

Answer:

Food webs show multiple pathways of energy and a food chain shows just one.

Explanation:

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Illustrate the differences between prokaryotic and eukaryotic cells.​
vlabodo [156]

Answer:

prokaryotic are unicellular organisms

eukaryotic are multicellular

Prokaryotic need only one parent to reproduce

Eukaryotic need 2 parents to reproduce

Explanation:

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In examining a picture of a cell taken with an electron microscope, a student observes that the cell has a nucleus and a cell me
Lana71 [14]
I’m pretty sure it’s B
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The physical characteristics of an organism is its: phenotype. genotype. alleles. gametes.
Veseljchak [2.6K]
The physical characteristics of an organism is its phenotype. I remember this because phenotype and physical both start with 'ph.'

Hope this helps. Good luck! :)
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3 years ago
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1.In this photo, what is similar about the appearance of the Moon and the appearance of the stone sphere on the top of the post?
Scorpion4ik [409]

Answer:

The moon isn't visible on the left side. There is a shadow on the left side on the sphere. The light or sun is casting down reflecting light of the right side of each surface.

Explanation:

4 0
3 years ago
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Which of the following situations does diffusion not help, in our bodies?A. Oxygen entering the bloodstream.B. Food entering the
lubasha [3.4K]

Answer:

Glucose entering the intestines from the villus.This is by active transport.The latter is defined as the movement of molecules and  solutes from the region of lower concentration to the region of higher concentration against the concentration gradient.

Explanation:

All the above options depends on the diffusion gradients from one  higher region to another.e.g oxygen passing from high concentration from outside to lower concentration in blood stream,like wise Co2 from higher concentration from inside to outside,with passive diffusion lipids and water enter the small intestine(note amino acid and glucose,and fructose are different).

Active transport( through sodium dependent transporter) transports glucose to the intestine  from the villus.This is movements against concentration gradient because,glucose molecule are concentrated in intestine,and needed by the cells, in the body.Therefore they must be transported as a fast rate inn the blood .

However the absorption by the villi is very slow,therefore active transport is needed to move these against the concentration gradient into the intestine.And finally the blood.

If this were to be moved by  passive diffusion,the high concentration in the intestine will force this back into the villi

Therefore extra energy is needed by active transport for the glucose molecules to enter the intestine from the villus.

6 0
3 years ago
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