The correct answer is A. magma
Magma is just lava but when it's inside of the volcano. When it leaves the volcano it becomes lava.
Correct answer is B.
Explanation:
In their nucleus cells contain DNA. The DNA has information about size, shape and function of each cell. When the cell reaches it's full size it stops growing and starts doing whatever it's function is. If more cells are needed then the cell replicates. This explanation excludes answers A and C.
Male and female sexual cells are used to conceive a baby. These cells combine to form a new type of cells. In the first few weeks all types of cells are created. Then the creation of new types of cells stops and existing cells multiply in order to achieve needed number of cells. This explanation excludes answer D.
When we compare an adult person and a baby we can see that, for example, an adult has bigger bones than a baby. This was result of increasing number of existing types of cells without creating any new type.
The correct answer is A. The country's population is aging.
Answer:
Miller considers living systems as a subset of all systems. Living systems according to Parent (1996) are by definition "open self-organizing systems that have the special characteristics of life and interact with their environment. This takes place by means of information and material-energy exchanges.
Explanation:
<span>a. too cold to support our current ecosystem
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Greenhouse effects help keep the earth warm.The earth has a natural greenhouse effect. It has been there since the beginning and has sustained life ever since.Naturally occurring greenhouse gases such as carbon dioxide and methane allow solar radiation to reach the earth's surface, while trapping radiation from the earth on its way back out to space.The trapped energy warms the earth's surface , making it about 35 degrees Celsius warmer than if we didn't have the greenhouse gases in the atmosphere. There would be no life on earth without the warmth provided by this natural greenhouse effect.
