how was the united kingdom's role in the events leading to world war 1 different from that of germany

The United Kingdom was a member of the Triple Entente, while Germany was a member of the Triple Alliance. c. The United Kingdom entered the war at the beginning, while Germany entered several years later. ... The United Kingdom engaged in trench warfare, while Germany refused to engage in any nontraditional tactics.

the answer is d   for sure : )

- 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