Phytoplankton contribute positively in the oceanic ecosystem as they are a source of food for oceanic animals. Moreover, they remove carbondioxide from the carbon cycle and utilize it for the process of photosynthesis.
The second one because they can indicate infection and sickness
They carry oxygen to your entire body, and carry carbon dioxide away from your body to be exhaled.
Answer:
B and C
Explanation:
Cells are the simpliest level of life and they make up tissues. They are made up of <em>cell organelles</em> not organs so it cannot be D (in case you were confused).
Hope this helped!
Growing a new spider plant from a plantlet is called vegetative reproduction.
