Most deserts are present at around 30o latitute N and S because:. a. The Hadley cells in the Summer drop hot dry air at those latitudes
b. The Hadley cells in the Spring and Fall drop hot dry air at those latitudes
c. They are zones of high pressure with high relative humidity
d. They are zones of low pressure with low relative humidity

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

Y’all i need answers plss people are saying me and my brother look alike although we’re two different ages. one year apart i’m a girl, btw i’m thinking we could be fraternal twins idk my parents and my friends think we look alike

Question 1 of 102 pointswhich best describes adaptive radiation? oa. geographical isolation caused by an adaptationob. biodiversity resulting from few ancestorsoc. a decrease in the rate of speciationd. adaptations that organisms teach each other