How do plants produce chemical weathering?

a.
they secrete carbon dioxide that combines with water on the rocks and dissolves the minerals in the rocks.

b.
they secrete chemicals that allow them to ingest minerals in the rocks.

c.
they secrete acids that dissolve the minerals in the rocks.

d.
they secrete chemicals that freeze the water within the cracks of the rocks and break down the rocks.

Which sequence of transformations on preimage ∆abc will not produce the image ∆a'b'c'? a. reflection across the line y = x b. rotation 180° clockwise about the origin followed by a reflection across the line y = -x c. reflection across the x-axis followed by a reflection across the y-axis d. reflection across the line y = -x followed by a rotation 180° counterclockwise about the origin e. reflection across the y-axis followed by a rotation 90° clockwise about the origin

Explore the ways that boundaries influence identity, interaction and exchange. things to consider: what is the race/ethnicity. how easy is it to interact/trade with others.

People make choices about how to use resources.