Answer:
Blood vessels are the channels or conduits through which blood is distributed to body tissues. The vessels make up two closed systems of tubes that begin and end at the heart. One system, the pulmonary vessels, transports blood from the right ventricle to the lungs and back to the left atrium.
Explanation:
The energy in food substances is released via chemical reactions that take place within the mitochondria which are present in some single celled organisms.
Phase change is the change in state. i.e. water to steam or ice to water
Answer: Below
Explanation:
Alligators play an important role in maintaining ecosystem balance. Sitting at the top of the food chain, alligators are top predators and help keep other animal populations in balance. By digging holes and leaving trails throughout marshes, they create habitats for fish and marine invertebrates
The saying it's freezing outside just means it feels very cold. It's not accurate because the temperature doesn't actually cause you to psychically freeze.
