If GM crops can decrease pesticide use, why are environmentalists still concerned about them?
a. Trials involving biotech fruits and vegetables have increased dramatically in recent years.
b. Inserted genes can spread to non-target species.
c. The government funds most GM crop research.
d. The FDA does not regulate them.
e. There is no public opposition to GM crops.
Answer: b. Inserted genes can spread to non-target species.
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Four of the five structures listed below are innervated
by the autonomic nervous system. Select the exception. a. skeletal muscles b. smooth muscles c. heart d. endocrine glands e. exocrine glands
Competition between species 1 and species 2 is beneficial for species 1 and harmful for species 2. Indicate whether the statement is true or false
Parasitic tapeworms are members of the phylum
A) Nematoda. B) Platyhelminthes. C) Annelida. D) Cnidaria. E) Arthropoda.
Someone who has broken an arm and has had a cast on it for months will notice a distinct shrinking of the arm once the cast is removed. Why does this happen?
A) Muscles that are not used will atrophy. B) The cast has reduced blood flow to the muscle tissue to reduce swelling. C) If the person was right-handed, he or she will become left-handed. D) The other arm was used more to compensate for the unused one, and it has become stronger.