What is the Study of the interactions of organisms with one another and with their environment?

The study of how organisms interact with each other and with their environment is called ecology.

Explanation:

Ecology studies ecosystems, which are areas made up of both living and nonliving factors that interact with each other constantly. Within an ecosystem, there is a community of living things and these are the biotic factors. There are also many nonliving factors, called abiotic factors, and these include the temperature, amount of sunlight, weather and wind, precipitation, and pH of water. The living organisms interact with and depend on each other for food, and they also interact with the environment. For example, the amount of sunlight and precipitation in an area affects the plant life that grows there. This in turn determines the types of animals that are able to survive in that particular environment.

light-year  

the distance that light travels in a vacuum in one year, equal to about 9.46 trillion km (5.88 trillion mi). light-years are used in measuring interstellar and intergalactic distances.  

parsec  

a unit of distance used in astronomy, equal to about 3.25 light years (3.08 × 1016 meters).  

parallax  

the apparent angular displacement of a celestial body due to its being observed from the surface instead of from the center of the earth (diurnal parallax or geocentric parallax) or due to its being observed from the earth instead of from the sun (annual parallax or heliocentric parallax)  

absolute magnitude  

the magnitude (brightness) of a celestial object as it would be seen at a standard distance of 10 parsecs.  

apparent magnitude  

the magnitude of a celestial object as it is actually measured from the earth.  

redshift  

an increase in the wavelength of radiation emitted by a celestial body as a consequence of the doppler effect.  

the great thing about your imagination is that it doesn't have to make sense! if i were you i would be stuck in space, no communication with earth travelling around and around, you can only guess how long its been since your communication broke down. you land on an undiscovered planet, you do a scientific investigation examining the elements and conditions. you come across alien lifeforms.  

best of luck!