"All carbohydrates are made up of units of sugar (saccharride). Carbohydrates containing only one unit of sugar (called "monosaccharides") or two sugar units of sugar (called "disaccharides") are known as "simple sugars" or "simple carbohydrates."
II hope this'll help you out :)
Answer:
Domain Eukarya have cells with a nucleus.
The Eukarya differ from the Archea and Bacteria in that their cells are eukaryotic, meaning they contain a membrane enclosed nucleus and other membrane enclosed organelles.
<span>Prokaryotes lack nuclei and many of the organells found eukaryotes, while eukaryote cells generally have more DNA than prokaryotes have and, therefore contain multiple chromosomes, thus how their structure differs.
Source : my brain
</span>
Ecosystems maintain themselves by cycling energy and nutrients obtained from external sources. At the first trophic level<span>, </span>primary producers<span> (plants, algae, and some bacteria) use solar energy to produce organic plant material through photosynthesis. Herbivores—animals that feed solely on plants—make up the second trophic level. Predators that eat herbivores comprise the third trophic level; if larger predators are present, they represent still higher trophic levels. Organisms that feed at several trophic levels (for example, grizzly bears that eat berries and salmon) are classified at the highest of the trophic levels at which they feed. Decomposers, which include bacteria, fungi, molds, worms, and insects, break down wastes and dead organisms and return nutrients to the soil
I got this passage from Annenberg Learner
</span>