Members of the porifera phylum have
a. no skeleton.
b. an exoskeleton.
c. an endoskeleton.
d. either an exoskeleton or endoskeleton, depending on the species.

Drag each label to the correct location. each label can be moved more than once match the properties with the subatomic particle

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?