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Brut [27]
2 years ago
10

Where would you expect to find the simplest body plans?

Biology
2 answers:
Y_Kistochka [10]2 years ago
7 0
Most sponge body plans are slight variations on a simple tube-within-a-tube design. which of the following is a key limitation of sponge body plans? sponges lack the specialized cell types needed to produce more complex body plans. the reliance on osmosis/diffusion requires a design that maximizes the surface area to volume ratio of the sponge. choanocytes must be protected from the hostile exterior environment. spongin cannot support heavy bodies.
Mars2501 [29]2 years ago
3 0

Answer:

4

&

the preserved remains of a living organisms

a dinosaur footprint found in a rock layer

a mosquito from 65 million years ago trapped in sap

Explanation:

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a. bacteria

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If the length of the absolute refractory period in cardiac muscle cells was the same as it was for skeletal muscle ________.
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white blood cell with fragments in its cytoplasm a. agranulocyte b. granulocyte c. thrombocyte d. platelet
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B. Granulocyte

Explanation:

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an organism's Fitness describes how well it is adapted to its environment the environment is made of biotic and abiotic factors
jeyben [28]

Answer:

Both biotic and abiotic factors affect the survival and reproductive success rate of fishes in an ecosystem.

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The number of preys will also affect the survival rate of fishes in an environment. The lesser the number of preys, the more the competition for food among species.

Abiotic factors like the concentration of salts in water will also influence the survival and reproduction of fishes. If a fish is not adapted to live in saline water conditions, then accumulation of salts in the ecosystem might destroy the whole fish species in that ecosystem.

Human activities, like the throwing of wastes into the aquatic ecosystem, drainage of fertilizers in the aquatic system can also destroy the survival and reproduction rate of a particular kind of aquatic animal species.

Explanation:

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