When George was younger, he experienced a very painful tooth extraction. He now has an extreme fear of dentists and has not had a checkup in years. To help George overcome his irrational fear, a behavioral therapist would MOST likely use:

a. the bell and pad treatment.
b. systematic desensitization.
c. rational-emotive therapy.
d. antianxiety medication.

Which element is used in photosynthesis found in atmosphere and fixed by bacteria?

6. in domesticated cats, the following are independently assorting: normal ears (t) is dominant to tufted ears (t); curved whiskers (c) is dominant to straight whiskers (c); the presence of six toes (s) is dominant to five toes (s); gene for hair length is an x-linked codominant. the three phenotypes for hair length are long (xhxh), medium (xhxh), and short (xhxh); medium is the heterozygous condition. given two parents: ttccssxhxh x ttccssxhy how many different gametes could be formed in the female cat with respect to these four traits? how many phenotypes are possible in the offspring from this mating?

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation