How do soils form?
a. plants provide organic matter and minerals to make soil.
b. erosion transports mineral particles, and plants die and decay.
c. plants cement mineral particles together to form soil.
d. weathering breaks rocks into minerals, and plants die and decay.

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.