Answer:
its based on the presence and absence of antibodies and antigenic substances on the surface of red blood cells.
Explanation:
Phytoplankton; small cells that use photosynthesis to turn sunlight into food that live near the surface of the ocean. There also responsible for about half of the Earth's primary production. The seasons also affect how well there doing, they need the climate best for them to produce right, changing seasons doesn't nearly affect them as much as climate change though.
Hope this helps, have a BLESSED day! :-)
Answer:
all the digestive activities of life (respiration , digestion, excretion, etc) occur at the cellular level.
Explanation:
-Eijiro <3