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

(Question)
Q: What type of species have a large effect on the balance of organisms in an ecosystem? Choices: - decomposers - producers - secondary consumers - keystone A:
(Answer)
keystone

Ques: Q: How do heavy alkanes affect the skin? Choices: - they do not affect the skin - damage the skin - color the skin - form a protective layer A:
Ans: form a protective layer

(Q).
Q: The umbilical cord connects the fetus to what structure? Choices: - Ovaries - uterus - cell - placenta A:
(A).
placenta

Ques:Q: The process when heat is released is referred to as what? Choices: - geothermal - endothermic - insular - exothermic A:

Ans:exothermic

Q: What is the term for a technique used to separate out homogeneous mixtures in which one or more solids are dissolved in a liquid? Choices: - transpiration - absorption - distillation - evaporation A:
evaporation