O1:2:1 because they are carbon, hydrogen and oxygen
Answer:
B. retain its urine in it’s blood stream
Explanation:
Sharks are cartilaginous fishes that lives in the ocean. Oceans are always salty, hence organisms need to maintain a salt-water balance between their internal and external environment because of osmosis. Sharks are able to maintain this by ensuring that the amount of solutes in their internal environment is as much as that in their external environment.
Sharks retain a chemical contained in urine called UREA in their bloodstream to counter the osmotic effect of the salt concentration in the waters they live. This helps them maintain a concentration balance with their environment.
It would be the pubis bone.
Answer:
Regulating
Explanation:
According to Millennium Ecosystem Assessment, there are four major categories of ecosystem services. These services include:
1. Provisioning
2. Regulating
3. Supporting
4. Cultural
The Regulating category is the category that consists of Air and water quality - Purification, climate, erosion, disease transmission, and pest proliferation - Biological control, and pollination.
The ecosystem services are services or functions rendered by the natural environment that ensure the environment is sustainable and healthy for human use.
