A scientific hypothesis must be testable and yield results. It must state the intended or predicted result of the experiment
The circulatory system and respiratory system are protected by your skin, muscles, and ribs.
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Trophic pyramid, also called an energy pyramid, showing the progression of food energy. The pyramid base contains producers, organisms that make their own food from inorganic substances. ... Thus, the higher the trophic level on the pyramid, the lower the amount of available energy.
D looks like the oldest one because there is barley anything there. if not then I would do b
