Which of the following describes an interaction between plants and only abiotic factors in an ecosystem? A. Bacteria in the roots converts nitrogen into a usable form for plants
B. Nutrients from decomposing leaves are absorbed by the roots of plants 2
C. Rainwater from clouds that is absorbed into soil enters the roots of plants
D. Taller plants blocking the sunlight from reaching the leaves of short plants

Idon't know how to do this but maybe ask your mom or dad

  like australopithecus afarensis; probably the direct ancestor of this group. africa: 5.8 to 4.4 million years ago. 

Mars and earth have quite a few things in common. both are  terrestrial planets, both are located within the sun’s  habitable zone, both have  polar ice caps, similarly  tilted axes, and similar  variations in temperature. and according to some of the latest scientific data obtained by rovers and atmospheric probes, it is now known that mars once had a  dense atmosphere  and was covered with  warm, flowing water.