3 Which of the following features of the
leaf enable it to carry out gas exchange
efficiently?
(1) There are numerous air spaces among
spongy mesophyll cells.
(2) There are stomata in the epidermis of
the leaf.
(3) The epidermis is covered by a cuticle.
A (1) and (2) only
B (1) and (3) only
C (2) and (3) only
D (1), (2) and (3)

“in 1492 columbus sailed the ocean blue” is an example of: a)explicit memory b) procedural memory c) semantic memory d)episodic memory

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d

No plagiarizing ! 6th grade work! easy and 100 compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.