Grasshoppers eat plants. Lizards eat grasshoppers. Birds eat lizards. Cats eat birds. In this example, birds are: a
Tertiary consumers.
b
Secondary consumers.
c
Producers.
d
Decomposers.
e
Primary consumers.

The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. this in turn led to the change in diet that included larger amounts of protein. many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. this demonstrates the intimate connection between

The pka of three different c―h bonds is given below. explain the observed trend in pka. select the single best answer.

For 50 points.. some organisms feed on other organisms without immediately killing them. what term describes this act? a. predation b. commensalism c. mutualism d. parasitism