Plz hurry it's urgent! which answer correctly describes the difference between a homogeneous mixture and a heterogeneous mixture? a. homogeneous mixture: uniform composition throughout heterogeneous mixture: easily distinguished substances of mixture b. homogeneous mixture: looks like it is made up of many substances heterogeneous mixture: looks like it is one substance c. heterogeneous mixture: also known as a solution homogeneous mixture: also known as a solid d. heterogeneous mixture: requires chemical separation methods homogeneous mixture: requires physical separation methods

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research. b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research. c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data. d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)

Approximately how many times does an average human heart beat in a lifetime?