Yardangs are tall, broad peaks that appear in deserts. Weathering and erosion work together to form yardangs. They are produced by the wind that carries dust or sand. The gritty wind wears away the soft rock of a cliff, leaving a shape like the one seen here. What are the agents of weathering and erosion that form yardangs?

a) wind picking up sand from the desert

b) wind and sand wearing away the rock face

c) rock particles falling to the base of the yardang

d) loose particles from the cliff blowing to new parts of the desert

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

What was the impact of the concordat of worms?