Plant responses to an environmental change by: increase in ions and organic compounds in xylem and phoem, form thick, waxy scales over leaf buds, and leaves drop off.
what kind of ecosystems would be most beneficial to the plants with the above changes?
1. ecosystems with great variation in rainfall throughout the year.
2. temperate ecosystem with cold winters
3. ecosystems near the equator with consistent conditions year round
4. desert ecosystem receiving occasional rain

1. amino acid refers to the fundamental building block of proteins, comprising of an amino group and a carboxyl group.

2. catalyst refers to any substance, which increases the rate of chemical reaction without being used up in the reaction.

3. a complex molecule containing he genetic code is dna or deoxyribonucleic acid.

4. an enzyme refers to a molecule of protein, which is unique in accelerating up a particular chemical reaction in the biological systems.

5. nucleic acid refers to an sequence of sugars, phosphates, and nitrogenous bases, for example, dna and rna.

6. a protein refers to a large, composite organic molecule comprising of a huge number of amino acids associated together with the of peptide bonds.

7. rna refers to a nucleic acid that takes part in the production of proteins.

8. substrate refers to a compound, which takes part in a chemical reaction, and is chemically modified by the reaction.