<span>because they are the ones able to harness free energy such as the sun and store it in sugars and other biological chemicals such as fats and proteins. other creature like us eat them to gain our energy so without them we would all starve</span>
Answer:
Roses and lilies are seed-producing, flowering plants, hence, these plants are angiosperms. Presence of flowers is the major characteristics of angiosperms, in which male and female reproductive organs are present.
Answer:
The temperature is kept at room temperature and mostly preferred to be constant, so that the temperature does't be a variable factor effecting the accuracy of experiment.
Temperature is kept constant to take it as a control factor, so that experimental results are not effected by such outside factors. Such control variables are important in experiments as they minimize the influences from outside.
When an acid is added to water, hydronium ions stay the same
