URGENT PLZ ANSWER Select all of the ways in which genetic variation can be achieved:

a) Mutations that will allow an organism to survive occur spontaneously
b) In sexual reproduction, genes from paired chromosomes can shuffle and cross-over
c) Mutations can create a new variation of a gene
d) Mutations can kill a variation of a gene
e) In sexual reproduction, genes from different chromosomes can shuffle and cross-over

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

To store strawberries in sugar syrup, lucy placed them in a jar and covered them with sugar but did not add any water. do you think syrup will be formed? justify. a. no. since water is not added, there cannot be any syrup formation. b. no. the higher concentration of sugar on the outside will cause the water from the sugar to diffuse in the strawberry cells causing them to swell without formation of any syrup. c. yes. the higher concentration of sugar on the outside will cause the water from the strawberry to diffuse out resulting in syrup formation. d. yes. the sugar will melt over time and form the syrup.

Which statement describes how favorable traits in a population relate to natural selection? they are the only traits that ever exist in the population. they build in the population over time. they are rarely passed on to offspring. they are found only in a few individuals within the population.