Answer the following question given this paragraph: Could a mineral be made by a process that was not natural? People make gemstones in a laboratory. Synthetic diamond is a common one. But that stone is not a mineral. That's because a mineral must be created by natural processes. This is part of the definition of a mineral. Q: Why is a synthetic diamond not considered a mineral? Choices: - fluctuations must be created naturally - Minerals must not occur naturally. - interactions must be created naturally - minerals must be created naturally A:
minerals must be created naturally
Answer the following question given this paragraph: As the rust forms on the surface of the iron, it flakes off to expose more iron, which will continue to rust. Rust is clearly a substance that is different from iron. Rusting is an example of a chemical change. Some chemical changes are not as obvious but are still hugely important. For example, photosynthesis and cellular respiration are chemical changes that we could not live without. Chemical changes involve the combination, decomposition, or rearrangement of elements and compounds to form new substances. Q: The combination decomposition or rearrangement of elements and compounds to form new substances is known as? Choices: - ionic changes - carbon changes - mineral changes - chemical changes A:
chemical changes
Q: Answer the following question given this paragraph: 29.4 Reptiles The amniotes are distinguished from amphibians by the presence of a terrestrially adapted egg protected by amniotic membranes. The amniotes include reptiles, birds, and mammals. The early amniotes diverged into two main lines soon after the first amniotes arose. The initial split was into synapsids (mammals) and sauropsids. Sauropsids can be further divided into anapsids (turtles) and diapsids (birds and reptiles). Reptiles are tetrapods either having four limbs or descending from such. Limbless reptiles (snakes) are classified as tetrapods, as they are descended from four-limbed organisms. One of the key adaptations that permitted reptiles to live on land was the development of scaly skin containing the protein keratin, which prevented water loss from the skin. Reptilia includes four living clades: Crocodilia (crocodiles and alligators), Sphenodontia (tuataras), Squamata (lizards and snakes), and Testudines (turtles). Q: The amniotes are distinguished from amphibians by the presence of a terrestrially adapted egg protected by what? Choices: - hard shell - yolk - albumen - amniotic membranes A:
A: amniotic membranes
Question: Answer the following question given this paragraph: The two adrenal glands are located above the kidneys. Each gland has an inner and outer part. The outer part, called the cortex, secretes hormones such as cortisol, which helps the body deal with stress, and aldosterone, which helps regulate the balance of minerals in the body. The inner part of each adrenal gland, called the medulla, secretes fight-or-flight hormones such as adrenaline, which prepare the body to respond to emergencies. For example, adrenaline increases the amount of oxygen and glucose going to the muscles. You can see an animation of this response at the link below. Q: What is the name of the outer part of the adrenal gland located above the kidneys? Choices: - nucleus - mitochondria - spleen - cortex A:
Answer: cortex
*Question*
Answer the following question given this paragraph: Darwin thought that evolution occurs gradually. This model of evolution is called gradualism. The fossil record better supports the model of punctuated equilibrium. In this model, long periods of little change are interrupted by bursts of rapid change. Q: Did darwin believe in punctuated equilibrium or gradualism? Choices: - it depended - neither - punctuated equilibrium - gradualism A:
**Answer**
gradualism
(Q).
Answer the following question given this paragraph: Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained within a nucleus and many other organelles. All of these cell parts must be duplicated and then separated when the cell divides. Q: What type of cell has a singular chromosome, no nucleus, and few other organelles? Choices: - trophic - graphic - monophyletic - prokaryotic A:
(A).
prokaryotic