Answer the following question given this paragraph: Decomposers are heterotrophs that break down the wastes of other organisms or the remains of dead organisms. When they do, they release simple inorganic molecules back into the environment. Producers can then use the inorganic molecules to make new organic compounds. For this reason, decomposers are essential to every ecosystem. Imagine what would happen if there were no decomposers. Organic wastes and dead organisms would pile up everywhere, and their nutrients would no longer be recycled. Q: Without what food chain component, organic wastes and dead organisms would pile up everywhere, and their nutrients would no longer be recycled? Choices: - acids - probiotics - nitrates - decomposers A:
decomposers
(Question)
Answer the following question given this paragraph: 40.2 Components of the Blood Specific components of the blood include red blood cells, white blood cells, platelets, and the plasma, which contains coagulation factors and serum. Blood is important for regulation of the body's pH, temperature, osmotic pressure, the circulation of nutrients and removal of waste, the distribution of hormones from endocrine glands, and the elimination of excess heat; it also contains components for blood clotting. Red blood cells are specialized cells that contain hemoglobin and circulate through the body delivering oxygen to cells. White blood cells are involved in the immune response to identify and target invading bacteria, viruses, and other foreign organisms; they also recycle waste components, such as old red blood cells. Platelets and blood clotting factors cause the change of the soluble protein fibrinogen to the insoluble protein fibrin at a wound site forming a plug. Plasma consists of 90 percent water along with various substances, such as coagulation factors and antibodies. The serum is the plasma component of the blood without the coagulation factors. Q: Red blood cells, white blood cells, platelets, and plasma are all components of what fluid? Choices: - heart - brain - Vessals - blood A:
(Answer)
blood
Ques: Answer the following question given this paragraph: An ideal engine, the most efficient theoretically possible, is called a Carnot Engine. Its efficiency is given by the following formula, where the temperatures are, respectively, the temperature of the exhaust environment and the temperature of the heat input, in Kelvins. In a Carnot engine heat is input and exhausted in isothermal cycles, and the efficiency is . In all real engines heat is lost to the environment, thus the ideal efficiency is never even close to being obtained. Q: What is the name of the the most efficient possible engine? Choices: - excitation engine - diesel engine - ventilation engine - carnot engine A:
Ans: carnot engine
(Q).
Answer the following question given this paragraph: 39.2 Gas Exchange across Respiratory Surfaces The lungs can hold a large volume of air, but they are not usually filled to maximal capacity. Lung volume measurements include tidal volume, expiratory reserve volume, inspiratory reserve volume, and residual volume. The sum of these equals the total lung capacity. Gas movement into or out of the lungs is dependent on the pressure of the gas. Air is a mixture of gases; therefore, the partial pressure of each gas can be calculated to determine how the gas will flow in the lung. The difference between the partial pressure of the gas in the air drives oxygen into the tissues and carbon dioxide out of the body. Q: Tidal volume, expiratory reserve volume, inspiratory reserve volume, and residual volume are all types of what kind of measurement? Choices: - respiratory volume - emitted volume - breathing volume - lung volume A:
(A).
lung volume
Ques:Answer the following question given this paragraph: All crocodilians have, like humans, teeth set in bony sockets. But unlike mammals, they replace their teeth throughout life. Crocodiles and gharials (large crocodilians with longer jaws) have salivary glands on their tongue, which are used to remove salt from their bodies. This helps with life in a saltwater environment. Crocodilians are often seen lying with their mouths open, a behavior called gaping . One of its functions is probably to cool them down. Q: Lying with their mouths open, a behavior called gaping, probably serves what function for crocodiles? Choices: - sleeping - digesting - eating - cooling down A:

Ans:cooling down
Answer the following question given this paragraph: Q: Traits inherited in mendelian patterns are either? Choices: - dominant or autosomal - divergent or dominant - recessive or allelic - dominant or recessive A:
dominant or recessive