Browsing through a seed catalog, you are tempted to order several beautiful floral varieties but worry that you will spend too much on your garden every year. Which plants should you buy?
A. Woody perennials, which require little space and few resources
B. Biennials, which will last twenty years before they die
C. Annuals, which will come back year after year
D. Herbaceous perennials, which will come back year after year
Answer: D
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Major hotspots of biodiversity, today's coral reefs have developed over only about _____ years of Earth's history
A. 10,000 B. 100,000 C. 1 million D. 40 million E. 100 million
A particular gene is 13,066 nucleotides long. This is
A) about 1.3 microbases. B) about 13 kilobases. C) about 1.3 megabases. D) about 3,011 amino acids.
Chromatin domains are loops of about _______ base pairs of DNA.
a. 1000 b. 10,000 c. 100,000 d. 1,000,000
Animals that are segmented and have jointed appendages and an exoskeleton are members of the phylum
A) Platyhelminthes. B) Annelida. C) Cnidaria. D) Arthropoda.