Astar is thought to be born when
a. a protostar reaches a temperature high enough for nuclear fusion to begin.
b. a red giant collapses on itself and becomes a black hole.
c. pressure within a protostar becomes so great that a supernova occurs.
d. increasing heat within a supergiant causes gravity to be greater than pressure.

What is the orange line on the graph and why is it important? describe the pattern of hurricanes reaching the usa since 1960

In upholding louisiana's separate car act, the supreme court claimed thatsegregation was not the same as discriminationthe fourteenth amendment did not apply to southern statesdiscrimination was necessary in order to maintain public ordero segregation was unconstitutional based on the fourteenth amendment

Sedimentary rock formation occurs when igneous, metamorphic, or other sedimentary rocks are exposed to the unyielding forces of nature found on the earth's surface. the formation of sedimentary rock occurs by several processes over millions of years. when rock sediments are deposited, an increase in weight causes pressure to increase which leads to the compaction of the rock particles. water is pushed out and cementation occurs as dissolved minerals are deposited in the very small spaces between the rock sediments acting as glue that binds the sediments together. which process describes the changing of sediments into rock by compaction and cementation? a) deposition b) lithification c) physical weathering d) chemical weathering