In Madagascar, scientists have discovered a moth, Xanthopan morganii
praedicta, (Moth) that has a 30.5 cm proboscis and feeds from and
pollinates Darwin's orchid, Angraecum sesquipedale. The orchid has a
nectar-producing tube that is 27.9 cm long. How is the moth's proboscis
size an adaptation for its environment?

O The moth can avoid larger animals,
O The moth can pollinate other flowers
O The moth has little competition for food.
O The moth has time to feed during the day,

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

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species