Human activities add carbon to Earth's atmosphere at a rate of about 1,000 million metric tons per year. As part of the natural carbon cycle, land plants and the ocean remove about 55% of this extra carbon and about 45% stays in the atmosphere. Identify TWO Earth systems that are being affected by the extra carbon from human activities. Explain how each Earth system is being affected.

Sorry i dont understand the question can you rephase it?

Idont really know sorry

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f. 

Ithink that one is (c)