Answer the following question given this paragraph: Figure 17.33 Resonance has been used in musical instruments since prehistoric times. This marimba uses gourds as resonance chambers to amplify its sound. (credit: APC Events, Flickr). Q: Resonance has been used in what kind of human-made recreational objects since prehistoric times? Choices: - toys - paintbrushes - arrows - musical instruments A:
musical instruments
(Question)
Answer the following question given this paragraph: A: You can tell that they are different compounds from their very different properties. Carbon dioxide is a harmless gas that living things add to the atmosphere during respiration. Carbon monoxide is a deadly gas that can quickly kill people if it becomes too concentrated in the air. Q: What type of gas is a harmless gas that living things add to the atmosphere during respiration? Choices: - helium - oxygen - Hydrogen - carbon dioxide A:
(Answer)
carbon dioxide
Ques: Answer the following question given this paragraph: Mollusks live in most terrestrial, freshwater, and marine habitats. However, the majority of species live in the ocean. They can be found in both shallow and deep water and from tropical to polar latitudes. They have a variety of ways of getting food. Some are free-living heterotrophs. Others are internal parasites. Mollusks are also eaten by many other organisms, including humans. Q: Where do the majority of species live? Choices: - air - trees - land - ocean A:
Ans: ocean
(Q).
Answer the following question given this paragraph: Pressure, volume, and temperature are related by the combined gas law. Q: Pressure, volume, and temperature are related by which law? Choices: - Law of Conservation - law of inertia - Murphy's Law - gas law A:
(A).
gas law
Ques:Answer the following question given this paragraph: Meiosis involves two cell divisions and produces four haploid cells. Q: What process involves two cell divisions and produces four haploid cells? Choices: - mutations - Mitosis - Klerokinesis - meiosis A:

Ans:meiosis
Ques:Answer the following question given this paragraph: 24.4 Subphylum Vertebrata (Vertebra from Latin vertere, to turn). Characterized by separate bones or cartilage blocks firmly joined as a backbone. The backbone supports and protects a dorsal nerve cord. Vertebrates have tissues which are organized into organs which in turn are organized into organ systems. All vertebrates share the following characteristics: - segmentation - a true coelom - bilateral symmetry - cephalization - a backbone - a bony skull - a closed circulatory system - chambered heart - two pairs of jointed appendages - tissues organized into organs Vertebrate Organ Systems: - Nervous System - Circulatory System - Digestive System Respiratory System - Reproductive System - Excretory System Vertebral column: Not present in higher vertebrate adults. (In humans, the gel-like, spongy core of the vertebral column is the only remainder. Ruptured or herniated disc is an injury to this. ) Cranium: Composite structure of bone/cartilage. Two functions: 1. Supports sensory organs of head and 2. Encloses or partially encloses the brain. What evolutionary relationship could we imagine between sessile echinoderms and the higher chordate animals? Paedomorphic (child-form) hypothesis: basically, evolution of sexual reproduction in what had previously been a larval life stage, or the retention of at least one juvenile characteristic into the adult (adult = sexually reproducing) stage. Some scientists believe that this occurred in a proto-chordate animal lineage. Maybe chordates (and vertebrates) arose from sessile (attached) ancestors. Selection in these proto-chordates maybe began to favor more time in the larval stage, as feeding was more successful or mortality lower in this stage. As larvae got bigger physics shows that the cilia become less efficient for locomotion, favoring the undulating motion allowed by a notochord. Is this hypothesis crazy? A similar example of this today is Epemeroptera, the mayfly, which has almost abandoned its adult stage. Its one-year lifespan is mostly larval with just a... Q: Vertebrates have tissues which are organized into organs which in turn are organized into what? Choices: - artificial systems - information systems - maturation systems - organ systems A:

Ans:
organ systems