Which of these examples demonstrates homeostasis?
a. a bird flies south for the winter and flies back north in the spring.
b.
an amoeba takes in food and digests it.
c.
a cat runs away when it hears a noise.
d.
a person's body increases blood flow to its cold feet.

This is a new idea, more effective device or process.this an be viewed as the application of better solutions that meet new requirements, inarticulated needs, or existing market needs. what's the term?

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Why would satellite imagery be more useful than a map in some instances? check all that apply. provides landmarks such as buildings is an overhead view of earth’s features can be used when internet is not available provides small details of roads for digital maps provides various methods of transportation to a location