A sea star is an invertebrate.
In arthropods, molting is necessary because _____.
In arthropods, molting is necessary because _____.
Which type of muscle is voluntary?
Which type of muscle is voluntary?
Plants with wide leaves have more surface area for photosynt…
Plants with wide leaves have more surface area for photosynthesis.
The integration and command center of the body is the _____.
The integration and command center of the body is the _____.
A microbiologist analyzes chemicals obtained from an envelop…
A microbiologist analyzes chemicals obtained from an enveloped RNA virus that infects monkeys. He finds that the viral envelope contains a protein characteristic of monkey cells. Which of the following is the most likely explanation?
Sponges feed by _____.
Sponges feed by _____.
Plants with wide leaves have more surface area for photosynt…
Plants with wide leaves have more surface area for photosynthesis.
Sharks are classified in which class?
Sharks are classified in which class?
Sponges feed by _____.
Sponges feed by _____.