Koala bears can only survive in environments with eucalyptus. This is an example of a: a. Biotic Factor
b. Generalist
c. Specialist
d. Abiotic Factor

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

What is the 77 element on the periodtic table

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen