Quiz
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Which statement best describes echolocation in dolphins?
Echolocation helps dolphins find food only
Echolocation helps dolphins find food and avoid predators.
Echolocation helps dolphins avoid predators only.
Echolocation is not used in dolphins.

Which image shows labeled organelles that are present only in plant cells?

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass