The answer is B because:
Cell walls are made of cellulose and proteins (hence II).
Animal cells don't have cell walls (only cell membrane) but plant cells do so IV
They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.
When river water<span> meets </span>sea water<span>, the lighter </span>fresh water<span> rises up and over the denser </span>salt water<span>. </span>Sea water<span> noses into the estuary beneath the outflowing </span>river water<span>, pushing its way upstream along the bottom. Often, as in the Fraser </span>River<span>, this occurs at an abrupt </span>salt<span> front</span>
Antibody: a large Y-shaped protein used in the immune system to identify foreign object such as viruses and bacteria.
Antimicrobial: kills microorganisms or inhibits their growth
Answer:
Micronutrients
Explanation:
micronutrients (vitamins and minerals) have a roles in numerous homeostatic process enabling the body to produce enzymes hormones and other substance that are essential for energy production cell maintenance and repair immune function and recovery from illness blood formation and maintenance of vital organ
