3. Name four examples of:
(a) mixtures
(b) compounds
(c) elements​

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

The softest and hardest minerals are: softest hardest

What’s #16 asking and how do i solve it?