A bird stalks, kills, and then eats an insect. Based on its behavior, which ecological terms describe the bird? Choose all that apply. Carnivore
Carnivore

Autotroph
Autotroph

Heterotroph
Heterotroph

Producer
Producer

Herbivore

Sydney drew a flow chart to illustrate the nitrogen cycle.which labels best complete the flow chart? x: producers undergo photosynthesis.y: nitrogen compounds are released into the air.x: nitrogen compounds are released into the air.y: producers undergo photosynthesis.x: free nitrogen is in the atmosphere.y: producers absorb nitrogen compounds through their roots.x: producers absorb nitrogen compounds through their roots.y: free nitrogen is in the atmosphere.

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?