I would say energy myself, and this is because energy plays a key role in all of these. With trophic levels energy is being transferred amongst the levels. Food chain's is a map of how the energy is passed along the chain. Food web is a web of how energy is transferred, and this is why I would say energy is a keyword.
Cells that do a similar activity join together to shape body tissue, for example, muscle, skin, or bone tissue. Gatherings of various kinds of cells make up the organs in your body, for example, your heart, liver, or lungs. Every organ has own must do, however all organs cooperate to keep up your body.
A plant and animal cell is eukaryotic
a eukaryotic cell has a nucleus instead of floating DNA which a prokaryotic cell has
Answer:
<u><em>1.) The adaptation of the Pulmonata to terrestrial life has entailed little modification of the internal organization.</em></u>
<u><em>2.) The short feet of the penguins are an adaptation.</em></u>
<u><em>3.) Progress is the result of adaptation, rather than reconstruction.</em></u>
<u><em>4.) It is an adaptation of hide-the-thimble.</em></u>
Hope this helps plz like and brainly :D
Much would be appreciated!<3