Answer the following question given this paragraph: Acid rain is rain that has a pH less than 5. It forms when nitrogen and sulfur oxides dissolve in rain. Acid rain kills living things and damages buildings and statues. Q: What is formed when nitrogen and sulfur oxides dissolve in rain? Choices: - toxic rain - ozone - hail - acid rain A:
acid rain
Answer the following question given this paragraph: The radiation exposure is determined by the number of rads times the quality factor of the radiation. Q: The radiation exposure is determined by the number of what times the quality factor of the radiation? Choices: - pounds - units - beacons - rads A:
rads
Q: Answer the following question given this paragraph: Two nuclei must collide for fusion to occur. High temperatures are required to give the nuclei enough kinetic energy to overcome the very strong repulsion resulting from their positive charges. A nuclear reactor consists of the following: 1. A nuclear fuel. A fissionable isotope must be present in large enough quantities to sustain a controlled chain reaction. The radioactive isotope is contained in tubes called fuel rods. A moderator. A moderator slows neutrons produced by nuclear reactions so that they can be absorbed by the fuel and cause additional nuclear reactions. A coolant. The coolant carries heat from the fission reaction to an external boiler and turbine where it is transformed into electricity. Q: What must two nuclei do for fusion to occur? Choices: - explode - melt - repel each other - collide A:
A: collide
Question: Answer the following question given this paragraph: Steels are a very important class of alloys. The many types of steels are primarily composed of iron, with various amounts of the elements carbon, chromium, manganese, nickel, molybdenum, and boron. Steels are widely used in building construction because of their strength, hardness, and resistance to corrosion. Most large modern structures like skyscrapers and stadiums are supported by a steel skeleton (see Figure below ). Q: What is the primary component of steel alloys? Choices: - carbon - titanium - alluminum - iron A:
Answer: iron
*Question*
Answer the following question given this paragraph: 28.7 Patterns of Inheritance There are two aspects to a person's genetic makeup. Their genotype refers to the genetic makeup of the chromosomes found in all their cells and the alleles that are passed down from their parents. Their phenotype is the expression of that genotype, based on the interaction of the paired alleles, as well as how environmental conditions affect that expression. Working with pea plants, Mendel discovered that the factors that account for different traits in parents are discretely transmitted to offspring in pairs, one from each parent. He articulated the principles of random segregation and independent assortment to account for the inheritance patterns he observed. Mendel's factors are genes, with differing variants being referred to as alleles and those alleles being dominant or recessive in expression. Each parent passes one allele for every gene on to offspring, and offspring are equally likely to inherit any combination of allele pairs. When Mendel crossed heterozygous individuals, he repeatedly found a 3:1 dominantrecessive ratio. He correctly postulated that the expression of the recessive trait was masked in heterozygotes but would resurface in their offspring in a predictable manner. Human genetics focuses on identifying different alleles and understanding how they express themselves. Medical researchers are especially interested in the identification of inheritance patterns for genetic disorders, which provides the means to estimate the risk that a given couple's offspring will inherit a genetic disease or disorder. Patterns of inheritance in humans include autosomal dominance and recessiveness, X-linked dominance and recessiveness, incomplete dominance, codominance, and lethality. A change in the nucleotide sequence of DNA, which may or may not manifest in a phenotype, is called a mutation. Q: What is a mutation? Choices: - change in the distinct sequence of dna - change in the swetha sequence of dna - change in the rna sequence of dna - change in the nucleotide sequence of dna A:
**Answer**
change in the nucleotide sequence of dna
(Question)
Answer the following question given this paragraph: The single-celled prokaryotic organism otherwise known as bacteria. And all it takes is one to quickly grow, under just the right conditions, into millions and billions. Luckily, we know how to control bacteria when necessary. But bacteria do serve many important purposes. In fact, we could not survive without them. Q: What type of organism is a bacteria? Choices: - multicellular organism - fungi - paramecium - single-celled prokaryotic A:
(Answer)
single-celled prokaryotic