What system do spiracles open into on a grasshopper? answer key?

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

How do the sperm cells get from the stigma to the ovules?

Which rate indicates the number of children that would be born per women if she were to live to the end of her child-bearing years