Q: Q: During labor, what do contractions of the muscular walls of the uterus cause? Choices: - spontaneous abortion - excretion - premature birth - cervical dilation A:
A: cervical dilation

Q: Q: What sort of gas is found in balloons and blimps, and is used to make them float in the sky? Choices: - oxygen - hydrogen - radon - helium A:
A: helium

Q: Q: Which parasite causes downy mildew in grape plants? Choices: - taphrina confusa - epichloe typhina - chrysomyxa ledi - plasmopara viticola A:
A: plasmopara viticola

Q: Q: What type of organism has many different specialized cells that work together to carry out life processes? Choices: - single-celled organism - mutated organism - sequenced organism - multicellular organism A:
A: multicellular organism