I believe it is called the cardiac muscle.
Answer:
they graze through the water slowly with mouth opened
I believe the answer is B.
Answer:
the answer is C
Animals get the nitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water. Bacteria alter the nitrogen into a form that plants are able to use
Scientific advancement has increased food safety by the use of preservatives, refrigeration, better packaging, labels with expiration dates...that's a good many right there!
