Ineed on this biology question most years, severe cold temperatures destroy large numbers of grasshopper eggs. one particular year, however, a mild winter allowed the grasshopper population to increase. as a result, the frog and toad populations were well fed. insectivorous snakes and birds had plenty to eat also. unfortunately, the grasshoppers were destroying the farmers' crops. to bring the grasshoppers under control, the farmers dusted their crops with a strong insecticide, killing the grasshoppers by the thousands. within a couple of days, however, various insectivorous snakes were found dead around the fields that had been treated with the insecticide. birds, however, that had consumed the same insects that the snakes had consumed were unaffected. limiting factors on the snake population include

Sea levels are rising due to climate change while increasing numbers of people are moving into coastal areas. to accommodate more people, there has been increased construction of beachfront resorts and condominiums. how is this impacting sea turtle numbers and biodiversity and why? a. the increased human population in coastal areas has meant that more food is available to the turtles (e.g., dropped food, waste from restaurants), which has led to an increase in the numbers and diversity of sea turtles. b. there has been very little change in the numbers and biodiversity of sea turtles because the planet is so vast that they can simply relocate to less crowded beaches. c. this has resulted in a decrease in numbers and diversity of sea turtles because it is restricting available nesting sites, and hence reproduction. d. this has resulted in an increase in numbers and diversity of sea turtles because people are around to protect them from natural predators.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele