Select the words that have silent "c". muscle
cable
rack
castle
scenery

This is language arts

In order to accurately determine absolute time, you need to know which of the following?

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.

The most effective way to provide children with safety messages is to