Terri wants to learn about areas that could be volcanically active. Ernesto wants to learn about the history of rocks in an area. Which statement is true?
O Terri should use a topographic map and Ernesto should use a geographic map.
O Terri should use a geographic map and Ernesto should use a topographic map.
Terri and Ernesto should both use geographic maps.
Terri and Ernesto should both use topographic maps.

Terri and Ernesto should both use geographic maps.

may i have brainliest? :D

C.

Explanation:

I dunno. took the test and got it right.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )