Although some studies suggested the presence of water on Mars, the planet represents a hostile environment for human habitation Scientists are currently researching ways to support potential human colonies on the Red Planet Scientists have created closed ecosystem models that allow them to control factors such as moisture and temperature in some of these closed ecosystems plant growth experiments are being run using simulated Mars soil made of volcanic rocks from Earth Given this information in three to five sentences describe one (nonplant) organism that could contribute to an important ecosystem service for this system and describe one ecosystem service that you benefit from due to your local ecosystem that
is probably not available on Mars

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

since electrons are negative the answer is neagtaive

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

how important do you think an instrument is to the musician who plays it?