Given: \overline{AD} \cong \overline{AE} AD ≅ AE and \overline{AB} \cong \overline{AC}. AB ≅ AC . Prove: \triangle ABE \cong \triangle ACD△ABE≅△ACD.

Answer feldspar,quartz,mica and amphibole;

Answer the above statement is correct (true);

The scientist can conclude that there is a decrease in the natural resources due to human activities. because of innovation and modernization of the environment, then there goes pollution and other bad effects that destroys the natural resources.