Answer the following question given this paragraph: Salamanders have developed ways not to be eaten. Most salamanders have brightly colored, poisonous skin. The bold color tells predators not to eat the salamander. Many salamanders have glands on the back of the neck or on the tail that give off a poisonous or bad-tasting liquid. Some species can even shed their tail during an attack and grow a new one later. Some salamanders stand high on its legs and waves its tail to scare away danger. One particular salamander, the ribbed newt, has needle-like rib tips. It can squeeze its muscles to make the rib tips pierce through its skin and into its enemy, telling the predator to stay away, a feature unique among the animal kingdom. Q: What features of a salamander's skin help protect itself from predators ? Choices: - camouflaged and thin - slimy and camouflaged - thick and impenetrable - brightly colored and poisonous A:
brightly colored and poisonous
(Question)
Answer the following question given this paragraph: The depth (distance from top to bottom) of the atmosphere is greatest at sea level and decreases at higher altitudes. With greater depth of the atmosphere, more air is pressing down from above. Therefore, air pressure is greatest at sea level and falls with increasing altitude. On top of Mount Everest, which is the tallest mountain on Earth, air pressure is only about one-third of the pressure at sea level. Q: The depth of the atmosphere is greatest where? Choices: - under water - the ionosphere - the stratosphere - sea level A:
(Answer)
sea level
Ques: Answer the following question given this paragraph: Figure 26.16 A compound microscope composed of two lenses, an objective and an eyepiece. The objective forms a case 1 image that is larger than the object. This first image is the object for the eyepiece. The eyepiece forms a case 2 final image that is further magnified. Q: What two lenses comprise a compound microscope? Choices: - polarized and focal - scope and focus - concave and convex - objective and eyepiece A:
Ans: objective and eyepiece
(Q).
Answer the following question given this paragraph: Q: What are the major sites of gibberellin production? Choices: - flower and fruit - soil and leaves - stem and roots - young roots and leaves A:
(A).
young roots and leaves
Ques:Answer the following question given this paragraph: Biotechnology will allow the development of crops containing genes that will help them to withstand harsh conditions. For example, drought and salty soil are two significant factors affecting how well crops grow. But there are crops that can withstand these harsh conditions. Why? Probably because of that plant's genetics. So scientists are studying plants that can cope with these extreme conditions. They hope to identify and isolate the genes that control these beneficial traits. The genes could then be transferred into more desirable crops, with the hope of producing the same traits in those crops. Q: What branch of science holds hope for developing crops with genes that help them withstand harsh conditions? Choices: - physiology - physics - chemistry - biotechnology A:

Ans:biotechnology
Answer the following question given this paragraph: The chemical reaction that is the opposite of oxidation is called reduction. Following from the notion that oxidation was originally thought to mean only the addition of oxygen, reduction was thought to be only the removal of oxygen from a substance. Many naturally occurring metal ores are present as oxides. The pure metals can be extracted by reduction. Iron is obtained from iron(III) oxide by reacting with carbon at high temperatures. Q: What chemical reaction is the opposite of oxidation? Choices: - mutation - condensation - evaporation - reduction A:
reduction