The answer to this question is the sacrum. The sacrum is a triangular bone that forms the base of the spinal column. This bone has a vital role in the skeletal system and also supports the weight of the upper body of a person and this bone and many nerves are inside the sacrum.
Answer:
D
Explanation:
Because the respatory system Circulates oxygen into the body and blood needs oxygen And the And the circulatory system circulates all the blood in your body Circulatory system circulates all the blood in your body in the works together with the respiratory system.
1) responsiveness to the environment;
2) growth and change;
3) ability to reproduce;
4) have a metabolism and breathe;
5) maintain homeostasis;
6) being made of cells; and.
7) passing traits onto offspring.
Hope this helped. ;)
Answer:
A
Explanation:
You can't measure photosynthesis in the equation, you can't figure out how many cells are in each plant accurately, and you also have no way to test the nutrient concentrations in the water.