(Q).
Q: What are materials that are poor thermal conductors called? Read this paragraph and choose the correct option from the provided answers: Particles of gases are farther apart and have fewer collisions, so they are not good at transferring thermal energy. Materials that are poor thermal conductors are called thermal insulators . Figure below shows several examples. Fluffy yellow insulation inside the roof of a home is full of air. The air prevents the transfer of thermal energy into the house on hot days and out of the house on cold days. A puffy down jacket keeps you warm in the winter for the same reason. Its feather filling holds trapped air that prevents energy transfer from your warm body to the cold air outside. Solids like plastic and wood are also good thermal insulators. That's why pot handles and cooking utensils are often made of these materials. Choices: - pollution insulators - sunlight insulators - warmth insulators - thermal insulators A:
(A).
thermal insulators

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Q: What is the name for a series of changes in the reproductive system of mature females that repeats every month on average? Read this paragraph and choose the correct option from the provided answers: Egg production in the ovary is part of the menstrual cycle. The menstrual cycle is a series of changes in the reproductive system of mature females that repeats every month on average. These changes include the development of an egg and follicle in the ovary. Choices: - periodic table - urinary cycle - puberty - menstrual cycle A:
(A).
menstrual cycle

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Q: What does the thymus gland produce? Read this paragraph and choose the correct option from the provided answers: Organs of the lymphatic system include the tonsils, thymus gland and spleen. The thymus gland produces T cells or T-lymphocytes (see below) and the spleen and tonsils help in fighting infections. The spleen's main function is to filter the blood. The spleen also detects viruses and bacteria and triggers the release of pathogen fighting cells. Choices: - b cells - insulin - hormones - t cells A:
(A).
t cells