Why are living organisms more common in the littoral zone than in the benthic zone?

a.

The benthic zone has less light penetration.

b.

The littoral zone has a variety of plants.

c.

The littoral zone provides more resources.

d.

All of the above

Which statement describes many of the structures involved in the first line of defense of the immune system?

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Junction between a motor neuron and a skeletal muscle fiber 1) sarcoplasmic reticulum 2) junction 3) motor end plate 4) axon terminal

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Use this factor to calculate your protein needs based upon weight in kilograms. 1. 0.8 grams/kilogram 2. 1.2 grams/kilograms 3. 4.0 grams/kilograms a

Which describes the notation Tt for being the trait of being tall

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Vertebrates have a notochord during early embryonic development. True False

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Name two findings that have emerged from experiments done in space iss