Your right J is sexual reproduction, and K is asexual reproduction. But sexual reproduction requires the presences of a male and a female. But other asexual reproduction doesn't, and just requires sexual maturity. They produce offspring in the form of spores for example.
Living things get energy/food from the sun through a process called Photosynthesis
it's the process by which living organisms manufacture food in the present of sunlight, oxygen and some other vital nutrients.that is Carbon dioxide etc
It also contains green pigment, in addition they contain various yellowish carotenoids the blue pigment, red pigment, brown, yellow and black pigments. That is what i think.
In my science classes, it was called a producer and or a keystone species
