Mammals that give birth to live young that need little or no protection after birth are called
____________________ mammals Fill in the blank(s) with the appropriate word(s).
placental
Environmental & Atmospheric Sciences
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Waves at the shore will start to break when the ____
A) water depth is about twice the wavelength B) crest flattens into a rounded form C) wave period increases to 15 seconds D) wave height to water depth ratio is 3:4
Environmental & Atmospheric Sciences
Which cells of the immune system are the first to attack invading viruses or bacteria?
A) B cells B) dendritic cells C) macrophages D) T cells
Environmental & Atmospheric Sciences
Santa Clara County and the City of San Jose are centers of what industry?
A) Oil refining B) High technology C) Ranching D) Tourism
Environmental & Atmospheric Sciences
Charged particles called ____ can be traded for other substances in a mineral
a. atoms b. elements c. ions d. positrons
Environmental & Atmospheric Sciences