Athin transparent film on a reflecting surface often shows a distinct color. a slightly thinner or thicker film will show a different color. what produces the colors of thin film

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

Organelles found in plant cells that function through photosynthesis to produce glucose from carbon dioxide and water are called — question 21 options: chloroplasts guard cells photosynthons

20 the main source of energy for our planet comes from the