Answer:
The last one and the first one.
hope I could help you pls give this answer a hart thx
Explanation:
Answer:yes
Explanation:
Impure substance is a mixture of 2 or more molecules
Consumers because they cant make their own food
Activational effect is the correct answer.
Activational effect is an impermanent hormonal effect that leads to a change in physiological activity or behavior in both humans and adult animals. For instance, when testosterone levels rise in male songbirds they become more aggressive and tend to engage in courtship behavior. Also, a pregnant woman may get more emotional than usual due to an extra level of progesterone and estrogen during pregnancy.
Percentage of human sperm cells carry an X chromosome is C 50%