Which statement is true?
a. hormones travel via specific pathways to specific cells, while electrical signals travel through the blood to all areas of the body.
b. effects of hormones last for brief periods of time, while effects of electrical signals last for long periods of time.
c. hormones have a direct connection with target cells, while electrical signals do not.
d. it takes longer for hormones to be released into the bloodstream and be taken to target cells than it does for electrical signals to be transmitted

Fan egg cell containing the (n+1) number of chromosomes combines with a sperm cell containing the (n) number of chromosomes, what is the result of this union? a) all future somatic cells of the organism will contain the (2n + 1) number of chromosomes. b) all future somatic cells of the organism will contain the (2n - 1) number of chromosomes. c) only certain somatic cells of the organism will contain the (2n + 1) number of chromosomes. d) all future somatic cells of the organism will contain the normal diploid number of chromosomes.

Svetlana and her mother are very similar. both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. which statement  most likely  describes svetlana’s traits? svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment.svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment.svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment.svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.

In the practice of science, this type of reasoning is used to develop explanations.