Answer the following question given this paragraph: Earth rotates on its axis once each day and revolves around the Sun once every year. Q: Earth rotates on its axis once each day and revolves around the sun how often? Choices: - once each month - ever 3 years - every other year - once each year A:
once each year
Answer the following question given this paragraph: A wheel and axle is a simple machine that consists of two connected rings or cylinders, one inside the other. Both rings or cylinders turn in the same direction around a single center point. The inner ring or cylinder is called the axle, and the outer one is called the wheel. Besides the Ferris wheel, the doorknob in the Figure below is another example of a wheel and axle. For more examples, go to this URL:. Q: A doorknob and a ferris wheel are examples of what type of simple machine? Choices: - ball and socket - lever and pulley - ball and axle - wheel and axle A:
wheel and axle
Q: Answer the following question given this paragraph: Solution 1. The bond between the two nitrogen atoms is a triple bond. The Lewis diagram for N2 is as follows:. Q: The bond between the two nitrogen atoms is a what? Choices: - single bond - double bond - quadruple bond - triple bond A:
A: triple bond
Question: Answer the following question given this paragraph: 29.4 | Reptiles By the end of this section, you will be able to: Describe the main characteristics of amniotes Explain the difference between anapsids, synapsids, and diapsids, and give an example of each Identify the characteristics of reptiles Discuss the evolution of reptiles The amniotes reptiles, birds, and mammalsare distinguished from amphibians by their terrestrially adapted egg, which is protected by amniotic membranes. The evolution of amniotic membranes meant that the embryos of amniotes were provided with their own aquatic environment, which led to less dependence on water for development and thus allowed the amniotes to branch out into drier environments. This was a significant development that distinguished them from amphibians, which were restricted to moist environments due their shell-less eggs. Although the shells of various amniotic species vary significantly, they all allow retention of water. The shells of bird eggs are composed of calcium carbonate and are hard, but fragile. The shells of reptile eggs are leathery and require a moist environment. Most mammals do not lay eggs (except for monotremes). Instead, the embryo grows within the mother's body; however, even with this internal gestation, amniotic membranes are still present. Q: What are mammals that lay eggs called? Choices: - kangaroos - amphibians - herbivores - monotremes A:
Answer: monotremes
*Question*
Answer the following question given this paragraph: Q: Prokaryotes are successful because of the ________ of reproduction in favorable environments Choices: - order - cycle - volume - speed A:
**Answer**
speed
Answer the following question given this paragraph: A spectrometer produces a spectrum from starlight. Astronomers can learn a lot about a star by studying its spectrum. Q: What is a spectrometer able to produce from starlight? Choices: - radio waves - exposure - aspect - spectrum A:
spectrum