The answer to this is false, a vector is a disease usually spread from a bite.
Answer Internal and external environmental factors, like gender and temperature, influence gene expression. ... Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
Explanation:
Answer: B
Explanation: The amount of salt in the inner circle is equal to the amount of salt in the outer circle.