(Q).
Q: What is the boiling and freezing point of water in celcius? Read this paragraph and choose the correct option from the provided answers: Melting and boiling points are somewhat unique identifiers, especially of compounds. In addition to giving some idea as to the identity of the compound, important information can be obtained about the purity of the material. Choices: - 100 degrees c and 32 degrees c - 212 degrees c and 0 degrees c - 212 degrees c and 32 degrees c - 100 degrees c and 0 degrees c A:
(A).
100 degrees c and 0 degrees c

(Q).
Q: What is the most important source of energy on earth? Read this paragraph and choose the correct option from the provided answers: The sunlight that reaches Earth is the planet's most important source of energy. The energy in sunlight, called solar energy, is electromagnetic energy. This is a form of energy that travels through space in electric and magnetic waves. Solar energy can be used to heat homes and produce electricity in solar cells like those on the roof seen in the Figure below . Sunny areas receive plenty of sunlight to generate electricity, but solar energy may not be practical in areas that are often cloudy. Choices: - the earth's core - water - moon - sun A:
(A).
sun

(Q).
Q: Four haploid spermatids form during meiosis from what? Read this paragraph and choose the correct option from the provided answers: Maturation of the ovum. Notice only 1 mature ovum, or egg, forms during meiosis from the primary oocyte. Three polar bodies may form during oogenesis. These polar bodies will not form mature gametes. Conversely, four haploid spermatids form during meiosis from the primary spermatocyte. Choices: - the zygote - the sister chromatic - the ova - the primary spermatocyte A:
(A).
the primary spermatocyte