Which sub-layer thins out into space, where there is no air? ozonosphere thermosphere ionosphere exosphere

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

Ablastocyst is a group of cells that forms after a human egg is fertilized. the blastocyst consists of two types of cells. some of these cells will become the placenta. what do the other cells develop into?

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