4. Which laboratory procedure is represented in the diagram below? (1) placing a cover slip over a specimen (3) adding stain to a slide without removing the cover slip
(2) removing a cover slip from a slide (4) reducing the size of air bubbles under a cover slip

answer; ///i do believe that the correct answer is (c) hold atoms together to form compound;

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.