Answer:Specialized cells perform specialized functions in multicellular organisms. Groups of specialized cells cooperate to form a tissue, such as a muscle.
Explanation:
<span>As humans change the way we live on the planet, the way that nitrogen moves around the Earth also changes. Nitrogen atoms may seem small enough to be easily overlooked. We look right through the ones in the air, do we not? Yet recent changes in the nitrogen cycle are causing a very noticeable effect on natural environments and human health. Lakes are clogged with aquatic weeds. Dead zones have formed in areas of the oceans where animals can not survive. Air pollutants that contain nitrogen are decreasing air quality and greenhouse gases that contain nitrogen are becoming more common.</span>
Proteins is made up of a sequence of an amion group, a carboxyl group, a hydrogen atom and a side chain bonded to the central carbon atom.
Answer:A
On my work the answer was D ..
Explanation:
i think they obtain food in order to get the energy they need to carry out life functions
