Robbie is trying to learn as much as he can about a rock that he found. this particular rock contains some fossils. what can robbie learn from the fossils?

Of four agents alpha, beta, gamma anddelta, three have to be sent together on amission. if alpha and beta cannot gotogether, beta and gamma cannot go togetherand gamma and delta cannot go together,then which of the following holds? 1. any three agents can be sent.2. alpha, delta and any one out of beta andv gamma can be sent.3. beta, gamma and any one out of alphaand delta can be sent.4. the mission is impossible.

According to the passage weisers mother could be blamed for

Blank is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound