Biology, 15.10.2019 14:00 gwendallinesikes
The northern red-legged frog, or rana aurora, is found along the western coast from british columbia to northern california. their typical breeding season lasts from january to march. the foothill yellow-legged frog, or rana boylii, is found along the western coast from northern oregon to central california. their typical breeding season lasts from april to july. what mechanism might keep rana aurora and rana boylii from mating?
a) anatomical isolation
b) temporal isolation
c) geographic isolation
d) behavioral isolation
im pretty sure its c or
Answers: 2
Biology, 21.06.2019 20:00
Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data
Answers: 1
Biology, 22.06.2019 04:30
Rachel ate a piece of fruit and happened to drop the seeds in her backyard. after a few weeks, she saw a small plant with flowers growing in the backyard. which group does this plant belong to? a. angiosperms b. gymnosperms c. pteridophytes d. bryophytes e. chytrids
Answers: 1
The northern red-legged frog, or rana aurora, is found along the western coast from british columbia...
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