Answer:
The Sun
Explanation:
Nearly everything eats sunshine – or eats something else that ate sunshine. The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter.
Break down food into simpiler compounds in order to supply nutrients to the body - monosacchrides, nucleotides, peptides, lipids.
Tight junctions are cell junctions that seal tissues. These junctions form protective and functional barriers.
- The cell junction that is involved in creating a barrier between cells is the TIGHT junction.
- The tight junctions are cell-cell adhesion structures implicated in cell polarity and signaling.
- On the other hand, adherens junctions are cell junctions required for maintaining contact inhibition.
- Finally, desmosomes are intercellular junctions that bind intermediate filaments of the cytoskeleton with cadherin proteins.
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Answer:
Explanation:
Why are layers of rocks related to each other?
Layering, or bedding, is the most obvious feature of sedimentary rocks. ... This Law of Superposition is fundamental to the interpretation of Earth history, because at any one location it indicates the relative ages of rock layers and the fossils in them. Layered rocks form when particles settle from water or air.
