What evidence supports the argument that human activities are causing major changes global systems?

Answer and Explanation:

Humans are one of the most powerful biotic factors. Human  activities have had great influence on the distribution of other organisms. The use of aerosols and industrial chemicals like chlorofluorocarbons which are residual and persistent can cause depletion of the ozone layer. This results in harmful radiations from the sun reaching the earth's surface.

Excessive production of CO2 by the industries and removal of vegetation like the trees results in the accumulation of CO2 in the lower atmosphere. This causes the greenhouse effect which results in global warming.

Radioactive emission from nuclear reactors, mine and radioactive wastes causes cancer, mutations and even death.

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

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!