These studies are designed to determine the effect of both environment and genetics on human behaviour. The study of human behaviour has always focused on the question of whether nature or nurture play the most important role in the development of human personality and behaviour. Studying biological or adopted siblings and twins can help scientists assess the impact of genes and experience on behavioural phenotypes.
The answer for this question is (C.) Diamonds and gold.
I hope that is right
Logrolling is the trading of votes between members of Congress so that each gets the legislation he or she wants. Logrolling entails that both parties will pledge mutual support.
When a legislator logrolls, he initiates the exchange of votes for one act or bill in exchange for votes for another act or bill. Logrolling entails that both parties will pledge mutual support in order for both bills to pass with a simple majority. Logrolling is not permitted during presidential elections, where a large voting population means that vote counts have little political clout, or during secret-ballot elections. Because logrolling is so common in the political process, it's critical to understand what external factors influence when, why, and how logrolling occurs, and whether it's advantageous, efficient, or neither.
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Um...
Is it just me, or is that more than one sentence?