Which of the following statements is false? humans are more complicated than crickets, but that doesn't mean they are better organisms. not all changes in the shape or behavior of an organism are evolution. humans are at the top of the evolutionary ladder because they have the largest brains. macroevolutionists look at evolution over the

Humans are at the top of the evolutionary ladder because they have the largest brains.

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: