Question 19 of 30 Who developed his theory of evolution by natural selection based largely on
observations he made on the Galápagos Islands?
A. Gregor Mendel
B. Charles Darwin
O c. Wilhelm Weinberg
O D. Thomas Malthus
(Help n hurry pleaseee!!!)

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?