chlorine has many diffrent isotopes but almost all chlorine atoms are either chlorine-35 or chlorine-37 a chlorine-36 isotope also exists suppose your job is to produce a broncure that compares and contrst these isotopes list 3 questions you would ask and answer in your brochure

satellites are frequently used to make observations of the orbit on earth

not sure if this is what you'r looking for eubacteria and archaebacteria

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.