Which species have had the least number evaluated for threats?
a. green algae
b. fishes
c. angiosperms
d. birds
a
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The rungs of the DNA ladder are formed by base pairs
A. joined by covalent bonds. B. joined by hydrogen bonds. C. joined by ionic bonds. D. NOT joined to each other.
In contrast to the excretory system of annelids, the excretory system of insects:a
has many openings on the body wall. b. contains flame cells. c. is not connected to the gut. d. excretes uric acid from the rectum. e. relies on diffusion across the body wall.
The largest genus in the order Lactobacillales is ________ with around 100 species.
A. Listeria B. Streptococcus C. Leuconostoc D. Lactobacillus
The zygote goes through ______ to become a female multicellular organism
Fill in the blank(s) with the appropriate word(s).