Organism A eats 5 kcal of food each day. It uses 1.5 kcal for respiration, 0.5 kcal for biomass gain and 1 kcal is egested. Organism B also eats 5 kcal each day. It uses 2 kcal for respiration, 1 kcal for biomass gain and 1.5 kcal is egested. Which organism is more Effective?

the answer will be a) proteins i believe

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

what school and grade?