Answer the following question given this paragraph: Q: What are passed from one generation to the next so species can survive? Choices: - selections - mutations - fluctuations - adaptatioins A:
adaptatioins
(Question)
Answer the following question given this paragraph: Young reptiles, like the baby alligator in Figure below , look like smaller versions of the adults. They don't have a larval stage as most amphibians do. Baby reptiles are able to move and search for food but are at high risk of predation. Adult reptiles rarely provide any care for their offspring once the eggs are laid. The only exceptions are female alligators and crocodiles. They defend their eggs and hatchlings from predators and help them reach the water. Q: What developmental stage do alligators lack that most other amphibians have? Choices: - Tadpole stage - metamorphosis - Egg Stage - larval stage A:
(Answer)
larval stage
Ques: Answer the following question given this paragraph: Saliva Saliva is essentially (95.5 percent) water. The remaining 4.5 percent is a complex mixture of ions, glycoproteins, enzymes, growth factors, and waste products. Perhaps the most important ingredient in salvia from the perspective of digestion is the enzyme salivary amylase, which initiates the breakdown of carbohydrates. Food does not spend enough time in the mouth to allow all the carbohydrates to break down, but salivary amylase continues acting until it is inactivated by stomach acids. Bicarbonate and phosphate ions function as chemical buffers, maintaining saliva at a pH between 6.35 and 6.85. Salivary mucus helps lubricate food, facilitating movement in the mouth, bolus formation, and swallowing. Saliva contains immunoglobulin A, which prevents microbes from penetrating the epithelium, and lysozyme, which makes saliva antimicrobial. Saliva also contains epidermal growth factor, which might have given rise to the adage "a mother's kiss can heal a wound. " Each of the major salivary glands secretes a unique formulation of saliva according to its cellular makeup. For example, the parotid glands secrete a watery solution that contains salivary amylase. The submandibular glands have cells similar to those of the parotid glands, as well as mucus-secreting cells. Therefore, saliva secreted by the submandibular glands also contains amylase but in a liquid thickened with mucus. The sublingual glands contain mostly mucous cells, and they secrete the thickest saliva with the least amount of salivary amylase. Q: Arguably the most important ingredient in saliva for digestion is a type of what, which initiates the breakdown of carbohydrates? Choices: - amino - genes - fatty - enzyme A:
Ans: enzyme
(Q).
Answer the following question given this paragraph: Q: Stomata are the main avenues of transpiration, the evaporative loss of water from what? Choices: - fruits - roots - stalks - leaves A:
(A).
leaves
Ques:Answer the following question given this paragraph: Sound is a form of energy that travels in waves through matter. The ability to sense sound energy and perceive sound is called hearing . The organ that we use to sense sound energy is the ear. Almost all the structures in the ear are needed for this purpose. Together, they gather sound waves, amplify the waves, and change their kinetic energy to electrical signals. The electrical signals travel to the brain, which interprets them as the sounds we hear. Q: What type of energy travels through matter in wave form? Choices: - vibrational - magnetic - light - sound A:

Ans:sound
Answer the following question given this paragraph: At the poles, the Sun's rays are least direct. Much of the area is covered with ice and snow, which reflect a lot of sunlight. Temperatures are lowest here. Q: Where are temperatures the lowest? Choices: - over the oceans - at the equator - in asia - at the poles A:
at the poles