Sepia, pulpo y calamar. Esponja, pólipo y medusa. Mariposa, mosca y abeja pertenece al mismo grupo de invertebrados o forman grupos diferentes

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. which of the following can be considered a population? question 9 options: all plants in the same area all cacti in the same area all species in the same area the lizards and the ants