Question

which practice requires the greatest amount of water input?
washing dishes
producing 1 pound of beef
making a cotton t - shirt
flushing the toilet
taking a shower

Explanation:

Producing 1 pound of beef requires a vast amount of water for cattle drinking, irrigation of feed - crops, and other associated processes. Washing dishes, flushing the toilet, taking a shower are household water - uses with relatively less water compared to beef production. Making a cotton T - shirt also requires significant water but less than beef production due to water used in cotton cultivation and processing.

Answer:

producing 1 pound of beef