Classification of Living Things — Cumulative exam Answers

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The emission spectrums are known for the elements below.What elements are in the unknown sample? Select 2 options.

boron

lithium

hydrogen

helium

potassium

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Which is one physical property that all stars have?

They are made of gases.

They shine very brightly.

They have a triangle shape.

They contain iron in their cores.

Gazala makes the device shown in the diagram and uses it to pick up four paper clips on the point of the nail.

reversing the battery

reversing the nail and using the nail’s head

wrapping the wire around the nail more times

unwrapping several loops of the wire from the nail

Why do a chicken embryo and a cow embryo look very similar even though the adults do not?

They are not related, but still have similar development.

They are distantly related, so their development is similar.

The embryos mutate in utero to form different structures.

The genetic makeup of the two species changes during development.

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