Please help!! ^^ Which of the following is NOT an environmental impact of mining?
A) Creates acid drainage that pollutes groundwater.
B) Causes erosion.
C) Destroys natural communities over large areas.
D) Creates minimal dust.

Sickle cell amelia is a condition condition where the red blood cells are deformed which is affected by sickle cell amenia

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.