If a star is moving toward Earth, it is A. red shifted
B. blue shifted
C. expanding
D. shrinking

Answer feldspar,quartz,mica and amphibole;

When a lake, river or other aquatic  system  becomes  eutrophic, it can have serious negative effects on other organisms like fish, birds and even people.if an algal bloom is so bad that it causes wide-spread death  in  the  water, the organisms that die will all sink to the bottom and start to decompose.

Nswer iceland is one of the most active volcanic regions on earth