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:
gradualism
(Question)
Answer the following question given this paragraph: Q: What does the moving piston in an engine turn? Choices: - hammer - muffler - brake - crankshaft A:
(Answer)
crankshaft
Ques: Answer the following question given this paragraph: Types of home heating systems include hot-water, warm-air, and solar heating systems. All of them have the same basic function: producing thermal energy and transferring it to air throughout the house. Q: Different types of home heating systems all function by producing what type of energy? Choices: - electron - natural - distinct - thermal A:
Ans: thermal
(Q).
Answer the following question given this paragraph: Technological design constraints may be physical or social. Q: What type of constraints are placed on technological design? Choices: - legal and social - moral and legal - physical and legal - physical and social A:
(A).
physical and social
Ques:Answer the following question given this paragraph: Isomers that contain the same number of atoms of each kind but differ in which atoms are bonded to one another are called structural isomers. Isobutane and n-butane are examples of structural isomers. One kind of isomerism consists of two compounds that have the same empirical formula but differ in the number of formula units present in the molecular formula. An example in coordination compounds is two compounds with the empirical formula Pt(NH 3)2Cl2. One is a simple square planar platinum(II) complex, Pt(NH3)2Cl2, and the other is an ionic compound that contains the [Pt(NH 3)4]2+ cation and the [PtCl4]2 anion, [Pt(NH3)4][PtCl4]. As you might expect, these compounds have very different physical and chemical properties. One arrangement of the Cl and NH3 ligands around the platinum ion in the former gives the anticancer drug cisplatin, whereas the other arrangement has no known biomedical applications. Q: What type of isomers contain the same number of atoms of each kind but differ in which atoms are bonded to one another? Choices: - different isomers - unique isomers - constitutional isomers - structural isomers A:

Ans:structural isomers
Answer the following question given this paragraph: Government policies and laws are needed to protect biodiversity. Such actions have been shown to work in the past. For example, peregrine falcons made an incredible recovery after laws were passed banning the use of DDT. Q: Peregrine falcons made an incredible recovery after laws were passed banning the use of what? Choices: - Carbaryl - miticide - Acetamiprid - ddt A:
ddt