Which of the following is not true of mammals?
A. They feed their young with mammary
glands.
B. They all have live births instead of laying
eggs.
C. They all have hair.
D. They are vertebrates.
B
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Water has an unusually high boiling point for its molecular weight because water molecules
a. are very dense. b. get much heavier as they are heated. c. are held to each other by hydrogen bonds. d. are held together by covalent bonds. e. form hydration layers.
There is currently a drying trend due to global warming in the Southern Hemisphere
Indicate whether the statement is true or false
A ball sitting on a table top has ________ energy because of its position.
Fill in the blank(s) with the appropriate word(s).
Match the structure of the amniotic egg with the correct description.
A. Amnion B. Yolk sac C. Chorion D. Allantois