Answer:
B
Explanation:
Autotrophs rely on the sun to produce energy through photosynthesis.
The force that gravity exerts on an object is called weight.
The shape of a planet’s orbit is elliptical.
The second law of planetary motion states that each planet revolves so that an imaginary line connecting it to the sun sweeps over equal areas in equal time intervals.
Answer:
Fungi have chitin as a component of their cell walls rather than cellulose, which is one of the primary differences between plants and fungi. Chitin and cellulose are both made up of polysaccharide chains. Another difference between plants and fungi is that plants contain chlorophyll whereas fungi do not.
A reasearcher must only measure one variable at atime,and using a scientific control group gives reliable baseline data to compare their results with.