Los protonefridios están constituidos por unos conductos que se comunican con una red de tubos que se ramifican por todo el cuerpo del animal hasta desembocar en dos tipos de células especializadas: las células flamígeras y los solenocitos. ¿Cuál es la diferencia entre estas dos células?

What are some aquatic organisms that live in cold water temperatures?

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey