Which of the following statements about the tundra is not true? a.
Tundra means “treeless land.”
b.
Plants and animals in the tundra have adapted to the extreme climate.
c.
Temperatures in the tundra range from extreme highs to extreme lows.
d.
The alpine tundra can be found on mountaintops.

c.  Temperatures in the tundra range from extreme highs to extreme lows.

Explanation:

all other statements are true

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hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.