In addition to replacing the president if necessary, it's the duty of the vice president to
a. review laws before the president signs them.
b. serve as speaker of the house.
c. serve as liaison to the judicial branch.
d. preside over the senate.

the was developed during the presidency of lyndon johnson.
a. peace corps
b. rural electrification administration
c. upward bound project
d. works progress administration

One of the Vice President's duties is to preside over the Senate. Being the President of the Senate, the Vice President will perform two important tasks. One is to cast a vote when there is a Senate deadlock. This is a situation where there is a 50-50 division between Democrats and Republicans in a vote for Senate majority. Second is to certify the official vote count of the U.S. Electoral major. In the event of voting, the Vice President has the upper hand to decide the majority that will rule the Senate.

The Rural Electrification Administration was developed during the presidency of Lyndon Johnson. His presidency sought highly the elimination of poverty. Through this program he empowered his people's economic growth, welfare and progress. 

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.