These are small passages through the epidermis in plants that can open and close, allowing for some
control of water loss by evaporation. In plants that have them, they are the main route for uptake of
carbon dioxide.
a. gemmae
b. tracheophytes
c. sporopollenins
d. stomata
e. thalli
D
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BOTH physical and chemical methods are used to treat and purify water
Indicate whether the statement is true or false.
Interbreeding between Neanderthals and modern H. sapiens likely took place in ____ around _____ years ago, before H. sapiens spread around the world
A. the Middle East; 60,000 B. Africa; 60,000 C. the Middle East; 200,000 D. Africa; 200,000 E. the Middle East; 1.4 million
Because of the _____________________, traits carried by early settlers are found in a large fraction of the descendent population
Fill in the blank(s) with correct word
The force needed to keep a ball rolling toward a bowling pin is
What will be an ideal response?