What is an explanation of why producers are always found at the lowest trophic level?

Aperson is outside exercising. body temperature begins to rise, and the person starts to sweat. their body temperature then returns to normal, and the body stops sweating. a positive b negative c allosteric d homeopathic

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content

What condition is kept close to its set point in osmoregulation? a. body temperature b.platelet count c.blood glucose level d.water balance