This photo shows a canyon. Canyons are very deep valleys, and they usually have high walls. Often, canyons are formed when rivers or streams cut through rock. The natural forces of water cause weathering, which breaks down rock. Then, they erode the rock by carrying it away downstream. This carves out a canyon.

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain

Which statements describe sustainable development? multiple answer choice -fishing does not remove more fish from water systems than can be replaced by the number of fish that will be born to replace them. -sustainable development is development that is designed to improve the economic conditions in less-developed countries. -sustainable development is mainly a regional issue. -sustainable development means water is used at a rate that won't reduce the amount available for future use. - sustainable development policies only need to be concerned with environmental protection. - trees cannot be cut down faster than the number that will be replaced by new growth.

James hutton is ? a. extensively studied fossils. b. revealed that fossils would provide the history of past life. c. created the first scientific classification of plants and animals. d. provided geologic evidence necessary for calculating the time span of evolution.