Why is the development of bipedalism considered to be a major advancement in human evolution?
What will be an ideal response?
Walking upright allowed hominids to use their hands for purposes other than locomotion, such as tool development.
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Crocuses that bloom in the early spring and marigolds that bloom in the summer would definitely
experience which type of isolation?
a. behavior b. ecological c. gametic d. temporal e. should not exhibit any type of isolation
It is difficult to make a vaccine against HIV because
a. the virus mutates rapidly. b. it is too expensive. c. it is a retrovirus. d. not enough is known about it. e. it contains reverse transcriptase.
Select the best response to the question. ? ?Chlamydia's long incubation period, (7-21 days between exposure and becoming symptomatic) contributes to what clinical concern?
A) the development of resistant strains of the disease B) more intense signs and symptoms C) difficulty identifying the specific pathogen causing the disease D) a large number of asymptomatic individuals who continue to spread the disease
Which type of plant hormone generally acts as a growth inhibitor?
A) auxins B) gibberellins C) cytokinins D) abscisic acid (ABA)