The ultimate source of energy (for most ecosystems) is the sun<span>. The ultimate fate of energy in ecosystems is for it to be lost as heat. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another.</span>
The answer is B because convection is the transfer of heat without two objects touching.
Radiation
The fire radiates heat and the human body absorbs said heat.
The first one because ladybugs r apart of the environment and r helping to keep aphids under control
Please mark brainliest