Q: Gastropods, cephalopods, and bivalves are examples of what class? Read this paragraph and choose the correct option from the provided answers: Mollusks are divided into ten living classes, including the familiar gastropods, cephalopods, and bivalves. Choices: - animals - invertebrates - cetaceans - mollusks A:
mollusks

(Question)
Q: What refers to the union of a male and female of the same species for reproduction? Read this paragraph and choose the correct option from the provided answers: Mating refers to the union of a male and female of the same species for reproduction. The relationship between mates varies by species. Adults may have many mates, or they may mate with just one individual. Mates may stay together only while mating. Or they may stay together for an entire breeding season or even for life. Choices: - asexual reproduction - dating - behavior - mating A:
(Answer)
mating

Ques: Q: What molecule is made of two hydrogen atoms and one oxygen atom? Read this paragraph and choose the correct option from the provided answers: A molecule of water ( Figure below ) is made of three atoms bonded together. Two of these atoms are hydrogen and one atom is oxygen. The hydrogen ions have a positive electrical charge. The oxygen atom has a negative electrical charge. The hydrogen atoms are located on one side and the oxygen atom on the other. This means that the side with the hydrogen ions has a slightly positive charge. The other side, the side without the hydrogen ions, has a slightly negative charge. The water molecule is a polar molecule . Choices: - Oxygen - carbohydrate - lipids - water A:
Ans: water

(Q).
Q: Coral reefs and tropical rainforests are ecosystems known for what, contributing greatly to the species in existence on earth? Read this paragraph and choose the correct option from the provided answers: How many species actually exist in the world? No one knows for sure because only a small percentage of them have already been discovered. Estimates range from 5 to 30 million total species currently in existence. Many of them live on coral reefs and in tropical rainforests (see Figure below ). These two ecosystems have some of the greatest biodiversity on the planet. Choices: - commensalism - mass migrations - spontaneous mutation - biodiversity A:
(A).
biodiversity

Ques:Q: Impenetrable what underlies the soil of the forest? Read this paragraph and choose the correct option from the provided answers: Choices: - structure - topsoil - groundwater - bedrock A:

Ans:bedrock

Ques:Q: What process of allows multicellular organisms to grow and repair themselves? Read this paragraph and choose the correct option from the provided answers: The process of cell division is how multicellular organisms grow and repair themselves. It is also how many organisms produce offspring. For many single-celled organisms, asexual reproduction is a similar process. The parent cell simply divides to form two daughter cells that are identical to the parent. Asexual reproduction produces offspring that are genetically identical to the parent, whereas sexual reproduction produces a similar, but genetically unique offspring. In sexual reproduction, meiosis produces haploid gametes that fuse during fertilization to produce a diploid zygote ( Figure below ). In other words, a child inherits half of the genetic material from each parent. Look at the family in Figure below . The children resemble their parents, but they are not identical to them. Instead, each has a unique combination of characteristics inherited from both parents. The children, of course, result from sexual reproduction. Choices: - proteins division - atom split - DNA division - cell division A:

Ans:
cell division