Q: What evolutionary process may affect the distribution of a polygenic trait? Choices: - artificial selection - flow selection - characteristic selection - natural selection A:
natural selection

(Question)
Q: Which group of the periodic table consists of hydrogen and the alkali metals? Choices: - group 2 - group 4 - group 3 - group 1 A:
(Answer)
group 1

Ques: Q: What is the amount of energy required to begin a chemical reaction known as? Choices: - decomposition energy - reaction energy - positive energy - activation energy A:
Ans: activation energy

(Q).
Q: Burning gas to run our cars is an example of how human activity is contributing to what global event? Choices: - ozone change - carbon change - metamorphic change - climate change A:
(A).
climate change

Ques:Q: Wind is one method for dispersal of what, ensuring a new generation? Choices: - dust - clouds - eggs - seeds A:

Ans:seeds

Ques: Q: What term is used for any combination of two or more atoms? Choices: - element - synthesis - nucleus - molecule A:
Ans:
molecule