The layer above the stratosphere is the?

Answers

Answer 1

Answer: The layer above the stratosphere is the Mesosphere.

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Which is the best example of organisms that have been naturally selected?

Answers

Natural selection is when species learn to adapt totheir environment. They could (1) differential reproduction, that is, not allorganisms are able to reproduce to their fullest capacity because nature cannotsimply sustain it and (2) acquire genes, that is heredity. Certaincharacteristics of organisms tend to survive if it continues to strive. If itsurvives, this trait is passed down to the next generations forgetting theother traits but only the one who could survive the environment. Therefore itis true that naturalselection is when ‘organisms inherit advantageous traits, and tend to reproducemore successfully than other organisms’. One best example is the extinction ofother animals and some with the same species retains.

One example is the snowy white owl. It came from the forest and rested and lived near a town. In the town, there was a lot of pollution, so the snowy owl evolved to become more blended with pollution and smoke, a brown or black color. So now, the snowy owls were technically extinct by natural selection and the darker shades of owls survived because of their adaptation to the environment and the color of their feathers.

For the growth curve to continue increasing which of these must occur

Answers

Because most species have a high reproductive capacity, populations tend to grow if environmental conditions permit. The change in the size of a population depends on the rate at which new organisms enter the population, compared with the rate at which they leave. Natality is the number of individuals added to the population by reproduction per thousand individuals in the population. Mortality is the number of individuals leaving a population by death per thousand individuals in the population. If a species enters a previously uninhabited area, its population will go through a typical pattern of growth. Figure 17.8 shows a population growth curve, which is a graph of change in population size over time. There are four recognizable portions in a population growth curve: the lag phase, the exponential growth phase, the deceleration phase, and the stable equilibrium phase.

The most abundant elements in the body are hydrogen, oxygen, carbon, and _____. calcium sulfur nitrogen boron

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The best answer is nitrogen. After all, it is found in our nucleic acids and proteins. Calcium can be found abundantly in our bones since calcium makes our bones strong. Sulfur can be found in our body but only in low and insignificant amounts. Boron is said to be lethal when taken in great amounts in our body; it can cause diseases and illnesses.

Answer:

nitrogen

Explanation:

Paneth cells ________.A. are more common in the ileum than in the jejunum
B. are absorptive cells in the small intestine
C. secrete enzymes that kill bacteria
D. are located next to the lacteal in a villus

Answers

C) secrete enzymes that kill bacteria

What determines the specificity of an enzyme for its substrate

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The constitution was shaped by european traditions, particularly _______ ideas as reflected in the Magna Carta and Bill of righs of 1689

My Plate was released to replace the food pyramid and displays the five main food

animal research is critically important for the study of variables that can't be _____ ethically in human subjects.

Answers

animal research is critically important for the study of variables that can't be manipulated ethically in human subjects.

Final answer:

Animal research is critically important for studying variables that can't be ethically tested in human subjects. Ethical regulations ensure the humane treatment of animal subjects and the minimization of pain and distress. Animal research is a privilege granted by society to researchers.

Explanation:

Animal research is critically important for the study of variables that can't be tested ethically in human subjects. Ethical considerations have necessitated strict regulations on animal research, such as the approval of an IACUC and regular inspections of animal facilities. The use of animals in research is a privilege granted by society to researchers, and efforts are made to minimize pain and distress experienced by animal subjects.

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A biology class wanted to study the effect of different materials on the melting rate of ice. They placed pieces of ice, each with a mass of 10g, onto trays. Group 1 was covered in plastic, group 2 was covered in paper, group 3 was covered in aluminum, and group 4 remained uncovered.Each piece of ice was allowed to melt for 15 minutes. Then final mass of the ice, minus the melted water, was recorded at the end of the experiment. Which of the following is the control group in this experiment?