A scientist discovers a new organism and is trying to classify it. Which observations would most likely indicate that the organism is an animal?

It is multicellular and can move itself from place to place,

It is heterotrophic and unicellular.

It makes food from sunlight and is eukaryotic.

It is prokaryotic and can move itself from place to place.

The friction red blood cells encounter when moving past each other. cardiac output: the amount of friction blood encounters during flow through blood vessels. blood pressure: the force of the blood against the vessel wall. blood viscosity: the volume of blood pumped out by one ventricle each minute.

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Why do we perceive objects as retaining their brightness under different lighting levels?