Answer: (A) The conclusion is valid because the independent and dependent variables in experiment were controlled.
Explanation: There are some basics requirements in order for an experiment to be valid: hypothesis, monitoring, independent and dependent variables and constants.
There are more overweight humans than animals becuase humans can easily get food than animals. Animals are getting hunted, killed for food, so that makes it less likely for other animals to get to eat if their getting killed off.
Grassland, desert, tundra, marine
Answer D. Because the DNA is different
Answer:
if you water a plant the water travels though the soil then it will feed the roots and then it will go to the leaves of the plant.
Explanation:
