Mrs. strunk's earth science class used an erosion model to investigate the relationship between the slope of a hill, or incline, and
the amount of soil that washes off of the incline.
the class increased the slope of the incline from 1 to 5. then, they poured 100 ml of water down the incline. finally, they collected
the soil from a tray at the bottom of the incline, dried the soil in an oven, and used a balance to find the mass of the soil. the data
from their study is shown below.
soil washed off incline (9)
slope of incline
based on the graph, more soil is washed away when
a. the soil is made mostly of sand.
b.
the slope of the incline is less steep.
c. there are fewer rocks in the soil.
d.
the slope of the incline is steeper.

Each year red-winged blackbirds stop in a certain region of midland province on their spring and fall migrations. in the fall, they eat a significant portion of the province’s sunflower crop. this year midland farmers sought permits to set out small amounts of poisoned rice during the blackbirds’ spring stop in order to reduce the fall blackbird population. some residents voiced concern that the rice could threaten certain species of rare migratory birds. nevertheless, the wildlife agency approved the permits. which of the following, if true, most to justify the wildlife agency’s approval of the permits, given the concerns voiced by some residents? (a) in the region where the red-winged blackbirds stop, they are the first birds to be present in the spring.(b) the poison that farmers want to use does not kill birds but rather makes them incapable of producing viable eggs.(c) since rice is not raised in midland province, few species of birds native to the province normally eat rice.(d) without the permit, any farmers shown to have set out poison for the blackbirds would be heavily fined. (e) the poison that farmers got approval to use has no taste or smell that would make it detectable by birds.