sugars are transported through the phloem, from sources to sinks, is called pressure flow. At the sources (usually the leaves), sugar molecules are moved into the sieve elements (phloem cells) through active transport.
<span>The building blocks for lipids are three fatty molecules and one glycerol molecule.They join to form a simple fat, or triglyceride. Proteins building blocks are amino acids. Amino acids are small molecules that contain carbon, hydrogen oxygen, and nitrogen atoms. Nucleic acids building blocks are nucleotides which are connected to form long chains,</span>
Answer:
An arctic fox changes its fur color to blend in with its surroundings
Explanation:
This is a defense mechanism because when it blends into its surroundings it can hide from its predators and help defend itself
