Which statements best represent sound? Click the fields to select your answer. A. Travels in waves ☐ B. A form of energy☐ C. Is a type of matter☐ D. Caused by vibrations☐ E. A type of electromagnetic wave☐ F. Travels through medium of matter☐

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. which of the following can be considered a population? question 9 options: all plants in the same area all cacti in the same area all species in the same area the lizards and the ants