Question

glucose.
as house plants grow, they bend towards the nearest source of light.
all living organisms presently on earth have descended from single-celled organisms originating 3.5 billion years ago.
analysis of a rock indicates that it is primarily composed of iron; analysis of an amoeba indicates that it is primarily composed of carbon, hydrogen, nitrogen, oxygen, sulfur, and phosphorous.
under the proper environmental conditions, one bacterium can become millions of bacteria in several hours.
the human cardiovascular system employs many methods to maintain a fairly constant blood pressure and rate of heart contraction.

Explanation:

1. House plants bending toward light is a direct response to an environmental stimulus (light).
2. All organisms descending from ancient single-celled life describes the evolutionary change of populations over time.
3. The difference in chemical composition between a non-living rock and a living amoeba shows that living things have a unique chemical makeup distinct from non-living matter.
4. A single bacterium multiplying into millions is an example of reproduction and growth of an organism/population.
5. The cardiovascular system maintaining stable blood pressure and heart rate is the process of regulating internal conditions to stay constant.

Answer:

1. As house plants grow, they bend towards the nearest source of light. → Living things respond to their environment
2. All living organisms presently on Earth have descended from single-celled organisms originating 3.5 billion years ago. → Populations of living things evolve over time
3. Analysis of a rock indicates that it is primarily composed of iron; analysis of an amoeba indicates that it is primarily composed of carbon, hydrogen, nitrogen, oxygen, sulfur, and phosphorous. → Living things have a different chemical composition than non-living things
4. Under the proper environmental conditions, one bacterium can become millions of bacteria in several hours. → Living things grow and reproduce
5. The human cardiovascular system employs many methods to maintain a fairly constant blood pressure and rate of heart contraction. → Living things maintain homeostasis