Which process is responsible for changing the composition of rock? erosion abrasion chemical weathering mechanical weathering

Children begin to use tools at about what age? a. 18 months b. 2 years c. 1 year d. 6 months

For 50 pointsfredrika's science teacher asked her to bring in three abiotic items from her backyard ecosystem. which of the following groups of items should she bring? a. a lightning bug, a plug of grass, and a wormb. a smooth rock, some red dirt, and an empty bird's nestc. a ladybug, a spider, and some water from a mud puddled. a caterpillar, a pine cone, and a piece of a robin's egg

Thoreau’s actions in civil disobedience and the 1955 bus boycott are similar because both thoreau and the boycotters were