Right now, we are threatened by global climate change. this is due to changes in conditions, an increase in atmospheric, carbon dioxide oceanic, marine life atmospheric, oxygen oceanic, salinity

atmospheric, carbon dioxide

Global climatic change is directly linked with the changes in the atmospheric conditions, this is because of increase in the carbon dioxide levels in the atmosphere. Atmosphere is the distinct layer of gases in the planet earth. Atmosphere regulates climatic change in a region. Carbon dioxide is a hot and harmful gas affects the quality of respirable air, and increasing the temperature of global climate.  

i would go with b

cytokinesis occurs after telophase so that eliminates d

and the entire reason for cytokinesis is for cellular reproduction

the answer would be..

b. sucking