Answer:
1)The atomic mass number of an element
2)The relative electronegativity of an element
3) The period of an element
Answer: b
Explanation:
forming a waterproof covering on feathers, leaves, and fruit.
Answer:
Used cross breeding to purposely breed plants. Studied a variety of pea plant traits. studied several generations of pea plants.
Explanation:
Physical fitness is a medical term describing the effect of exercise on body systems and disease prevention. The body’s ability to function efficiently and effectiveness' it should contain health-related physical fitness and skill-related physical fitness. Physical fitness includes metabolic fitness and bone integrity. It is associated with person’s ability to resist hypokinetic diseases.
Optimal physical fitness is not possible without regular exercise.
