Mechanical energy to chemical energy, i believe
6. Algae are biotic factors. They are living organisms which have the capability to produce food through photosynthesis. It acts as a producer. Also they appear on the wall of tank through reproduction , which is characteristics of living being.
7. Snail is also a biotic factor like algae. They are classified as consumers. They feed on algae to survive with in the tank. They move while feeding on algae and movement is an important trait of living being.
8. Light Bulb is an abiotic factor. Though it is an essential requirement for fish to survive but since it is not a living being , it is considered as abiotic. While fish on the other hand is a biotic factor as it possess life in it.
Answer:
A) It depends on the dispersal abilities of the organism. If the organism cannot move across the open ocean, it is very likely that the groupʹs ancestors were present on the original land mass before it broke up.
Explanation:
A) It depends on the dispersal abilities of the organism. If the organism cannot move across the open ocean, it is very likely that the groupʹs ancestors were present on the original land mass before it broke up.
B) The groupʹs ancestors cannot have been present on the original land mass before it broke up.
C) The groupʹs ancestors were definitely present on the original land mass before it broke up.
D) The groupʹs ancestors must have independently colonized each of the land masses from a third location within the past 45 million years.
The two land masses are separated by deep ocean channel which are purported to have been moving apart since 45 million years ago. Hence, for the organisms to have a widespread population on both land masses, either of two things are possible:
- The ancestors of the organisms had a wide range of dispersal mechanism to cover the two land masses as they were moving apart or
- The ancestors were present on the original land mass before it broke up into two. When it broke up, each land mass has some parts of the ancestors.
The correct option is A.
Answer:
➢ In a mercury thermometer, <u>a glass tube is filled with mercury</u> and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
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I think the correct answer from the choices listed above is option A. An offspring produced by selective breeding inherits certain desirable traits from its parents. For example, horse breeders breed their two best horses to create an offspring that is even better. Hope this answers the question.
