Answer;
D. The Open Marine ecosystem
Explanation;
An ecosystem
is the lowest level of environmental complexity that includes living (biotic factors)and nonliving factors (abiotic factors).
-The Open marine ecosystem contains the fewest photosynthetic producers, this is because most producers can't live or survive in an areas with the lack of nutrients or sun light. They need nutrients for growth and also sunlight to undertake the process of photosynthesis which helps them make their own food.
Answer:
The height to which to tomato plants grow
Explanation:
In an experiment, the dependent variable is the variable that the experimenter measures. It is the variable that responds to changes made to the independent/manipulable variable.
According to this question, students investigate how soil pH affects the height of tomato plants. The different pH each plant receives is the independent variable while the HEIGHT OF THE PLANTS that responds to the soil pH or that is measured by the students is the DEPENDENT VARIABLE.
Answer:
<em><u>"</u></em><em><u>Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements.</u></em><em><u>"</u></em>
300 B.C theophrastus was considered the "Father of Botanty"
Electrons in orbit about a nucleus of protons and neutrons
