Why the hummingbird is more closely related to a lizard than it is to a dragonfly

What is the function of ribosomes in cells They use the suns energy to make carbohydrates. They store energy in starch molecules. They recycle molecules for other uses in cells. They make proteins for the body.

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Which statement describes the movement of water when a cell shrinks and shrivels due to osmosis? Water went into the cell because the concentration of water inside the cell was lower than the concentration outside the cell.

How do models provide a practical solution for some scientific research?

Describe four human activities that have negative effects on earth's ecosystems. how do human activities increase the occurrence of species extinction?

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Aquaporins are proteins that control the passage of water molecules across a cell membrane. The protein forms a pore, or opening, in the membrane.

I have moist skin but no scales, and two pairs of legs. Although I have lungs and live on land, my young usually live in water and use gills to breathe.

Why is wind, like force, considered a vector quantity?

When did darwin arrive on the galapagos islands