The body mass of individual beetles of a certain species ranges from 0.8 grams to 2.9 grams. A population of birds is able to catch beetles having a mass of 1.8 to 2.2 grams. The birds removed a majority of these beetles and the population changed. After 300 generations, the individual mass of beetles in the population ranged from 0.8 to 1.4 grams and 2.4 to 2.9 grams. Which is the mechanism for the changes in this beetle population

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.

How does human environment effect the biosphere