Which explanation of the solar system best fits the observations of the planets and how they orbit the sun question 27 options: the gravity of a large, massive star passing the sun ripped off blobs of material from it that formed the planets. the planets formed at the center of a collapsing spinning cloud of gas and dust. the sun and planets formed from a collapsing spinning cloud of gas and dust. a comet hit the sun and sent off fragments that became the planets.

Structures in cells that carry out specific functions.

Drag each label to the correct location on the image. each label can be used more than once. a scientist introduced mutations in a gene sequence isolated from bacteria. study the sequence, and identify the steps where the mutations may affect the formation of proteins. in the sequence, black letters stand for protein coding regions and red letters stand for noncoding regions. protein will not be changed. protein may be changed. attcgtgttc atcgtgttc atcgtattc attcgtattc

Apopulation has 1000 individuals. over a period of 1 year, 500 newindividuals are born. which equation shows how to calculate the birthrate ofthis population? a. 500 - 1000 = 0.5b. 1000 x 0.5 = 500c. 1000 - 500 = 2d. 1000 + 500 = 1500