Most of the mass of the solar system is made up of the elements
a. carbon and hydrogen.
b. oxygen and hydrogen.
c. helium and hydrogen.
d. nitrogen and hydrogen.
e. nitrogen and carbon.
C; The solar system was formed primarily from hydrogen and helium, and these are the most abundant elements in the sun and in the four largest of the planets.
Biology & Microbiology
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in the Carboniferous period?
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Within chloroplasts, the fluid-like matrix in which the Calvin cycle occurs is called ________.
A. stroma B. mesophyll C. thylakoids D. grana
Biology & Microbiology
Desmosomes are linked to cytoplasmic
a. actin filaments. b. intermediate filaments. c. microtubules. d. myosin filaments.
Biology & Microbiology
What is a saturated fat?
What will be an ideal response?
Biology & Microbiology