If you have a backyard and want to produce compost, which of these must be present?
A. decomposer bacteria
B. backyard composter drum
C. community composting facility
D. flower bed
Answer: A
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The trading agreement between the United States, Canada, and Mexico is _________.
Fill in the blank(s) with the appropriate word(s).
Which has stronger attractions among its submicroscopic particles: a solid at 25°C or a gas at 25°C?
A) The attractions among the submicroscopic particles of the solid must be stronger than the attractions among the particles of the gas. B) The submicroscopic particles of the gas are moving faster. This means that they have more energy, which means that the attractions among them must be stronger. C) The attractions among the submicroscopic particles of the solid are much stronger—so much stronger that they hold the particles of the solid absolutely still. D) The temperatures of these two materials are the same, which means that the attractions among their submicroscopic particles are also of the same strength.
Cows require a high quantity of feed because they ________
A) are raised on feedlots B) take time to grow and have a low energy conversion efficiency C) are the best source of high-quality protein D) can feed more people than pigs
Ninety-five percent of all reptiles are ________
A) water dwellers B) snakes and lizards C) poisonous D) microscopic E) capable of flight