Some poisonous plants harm people and animals because they produce compounds that are structurally similar to amino acids. Possible reasons why these compounds are toxic include that they Select all correct phrase

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

the answers are a and c

d. organisms have cells with different shapes and functions.