Which of the following elements will most likely form an ion with a +1 charge?
A) Na
B) Mg
C) Al
D) Si
E) Cl
A
Environmental & Atmospheric Sciences
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What form of transport across the cell membrane does not require energy from the cell, but does require a transport protein?
A. diffusion B. facilitated diffusion C. active transport D. endocytosis
Environmental & Atmospheric Sciences
Describe the population patterns and movements of Australia from aboriginal times to the present.
Environmental & Atmospheric Sciences
The two most common elements in Earth's crust are ____________________ and ____________________
Fill in the blank(s) with correct word
Environmental & Atmospheric Sciences
This art work shows life on the sea bottom, at a time when fishes and creatures with shells appeared on Earth. What time period is represented?
A. Mesozoic B. Paleozoic C. Cenozoic D. Precambrian
Environmental & Atmospheric Sciences