how are the sun, earth, and moon aligned when spring tides occur?
the sun, earth, and moon form a straight line.
the sun, earth, and moon form a 45-degree angle.
the sun, earth, and moon form a 135-degree angle.
the sun, earth, and moon form a 90-degree angle.

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

Which of the following is a true statement? a. individuals evolve to have adaptations. b. individuals have adaptations that can change over time. c. individuals have traits that may or may not make them successful at reproduction. d. populations cant evolve, only individual organisms.

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent