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The roots help plants in anchoring them to the soil. They also serve as transport systems, allowing the plant to suck up water and dissolved minerals from the soil that it needs to grow. Some plants can store food in roots in the form of carbohydrates (sugars and starches).
Answer:
Starting in the 1900s, technologies and industrial developments advanced enormously, modifying the living conditions of human beings in general, throughout the entire width and length of the earth's surface.
Thus, starting with the Industrial Revolution of the mid-1800s, technologies such as the steam engine and the development of automated means of production generated a series of technological advances that allowed a greater modification of the environmental environment of human beings, in in order to guarantee better living conditions.
Now, these modifications, which at first were not harmful or at least not to a great extent, over the years and the development of technological advances began to impact the environment: the extraction of raw materials began To generate scarcity of them, the emission of gases into the atmosphere began to generate the phenomenon of global warming, and even indiscriminate hunting led to the extinction of hundreds of thousands of animal species.
Answer:
D (a recent study found that 86 percent of Americans are stressed out from constantly checking their smartphones.
Explanation:
I got it right on collegeboard
Answer:
I would say it is the Variable-Ratio Schedule because she doesn't know when she will be visited but she wants to be ready anyways just in case.
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Answer:
There are three types of economic indicators: leading, lagging and coincident. An economic indicator refers to data or information that help describe and measure the current state of the economy.Indicators expose trends and help to forecast economic events in the future. They are considered when during decision making and planning.
