eniendo en cuenta que los seres humanos nos encontramos en la cúspide de la cadena alimenticia y que por lo general somos omnívoros. Supongamos que usted almuerza una porción de arroz, dos papas saladas, una porción de ensalada y un asado mixto de carnes de cerdo, res y culebra. Establezca en que nivel de la cadena trófica se encuentra su alimento y en cual usted al consumirlo. (Por ejemplo el arroz se encuentra en el primer nivel trófico ya que es productor y adquiere su energía directamente del suelo y del sol).

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?