Types of cells that are shaped like roots are what?

nerve

Explanation: Cells specialize, and their shapes reflect what they do. Muscle cells are long and skinny, while epithelial (skin) cells tend to be square-like and flat. Nerve cells look like roots or tentacles, and fat cells look like blobs.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.