If a mouse eats grass, a snake eats the mouse, and an eagle eats the snake, what is the eagle ?
a. producer.
b. secondary consumer.
c. primary consumer.
d. tertiary consumer.

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geographical equipment to analyze the composition of rocks

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.