Answer the following question given this paragraph: The properties that chemists use to describe matter fall into two general categories. Physical properties are characteristics that describe matter. They include characteristics such as size, shape, color, and mass. Chemical properties are characteristics that describe how matter changes its chemical structure or composition. An example of a chemical property is flammabilitya material's ability to burnbecause burning (also known as combustion) changes the chemical composition of a material. Q: What type of properties are characteristics that describe matter? Choices: - visible - thermal - invisible - physical A:
physical
(Question)
Answer the following question given this paragraph: Flatworms The relationships among flatworms, or phylum Platyhelminthes, is being revised and the description here will follow the traditional groupings. Most flatworms are parasitic, including important parasites of humans. Flatworms have three embryonic germ layers that give rise to surfaces covering tissues, internal tissues, and the lining of the digestive system. The epidermal tissue is a single layer of cells or a layer of fused cells covering a layer of circular muscle above a layer of longitudinal muscle. The mesodermal tissues include support cells and secretory cells that secrete mucus and other materials to the surface. The flatworms are acoelomate, so their bodies contain no cavities or spaces between the outer surface and the inner digestive tract. Physiological Processes of Flatworms Free-living species of flatworms are predators or scavengers, whereas parasitic forms feed from the tissues of their hosts. Most flatworms have an incomplete digestive system with an opening, the "mouth," that is also used to expel digestive. Q: Unlike free-living species of flatworms that are predators or scavengers, what forms feed from the tissues of their hosts? Choices: - aquatic - mutualistic - herbiverous - parasitic A:
(Answer)
parasitic
Ques: Answer the following question given this paragraph: Q: What do the gonadotropins regulate? Choices: - temperature - epigenesis - mitosis - gametogenesis A:
Ans: gametogenesis
(Q).
Answer the following question given this paragraph: Cnidarians include jellyfish and corals. They are aquatic invertebrates. They have tissues and radial symmetry. They also have tentacles with stingers. There are two cnidarian body plans: the polyp and the medusa. They differ in several ways. Many corals secrete an exoskeleton that builds up to become a coral reef. Q: What do corals secrete that builds up to become a coral reef? Choices: - membrane - mucous - scales - exoskeleton A:
(A).
exoskeleton
Ques:Answer the following question given this paragraph: Q: What is the term for when a species no longer exists? Choices: - reproduction - endangered - survival - extinction A:

Ans:extinction
Ques:Answer the following question given this paragraph: A worldwide vaccination campaign by the World Health Organization led to the eradication of smallpox in 1979. Smallpox is a contagious disease unique to humans and is caused by two Variola viruses. The eradication of smallpox was possible because humans are the only carriers of the virus. To this day, smallpox is the only human infectious disease to have been completely eradicated from nature. Scientists are hoping to eradicate polio next. Q: What disease unique to humans and is caused by two variola viruses? Choices: - AIDS - diabetes - ebola - smallpox A:

Ans:
smallpox