Answer:
Oxygen is moved around the body of an echinoderm in its C. water vascular system.
Answer:
Humans are heavily polluting the waters in many areas with chemicals, medicine (for people), and garbage. A way that the government can help stop this issue is to have groups do routine cleanings of natural bodies of water along with prohibite the use of disposable items in the area like cups and/or bags.
Explanation:
In a human? Need more context here but should be outside the cell. At equilibrium you will have a more negative environment in the cell.
Answer: I think B . Like the second one
Explanation:
it is because of they raise the animals then we will have more food . Milk and help from the animals .
