Answer:
Europeans were barred from trading with Asian countries until they agreed to pay Middle Eastern “toll” fees for using their land passages.
Explanation:
The answer you're looking for is D, The direct exchange of one set of goods or services for another
The first constitution of the United States was "<em>The Articles of Confederation and Perpetual Union</em>" which was endorsed by the Continental Congress around 1777; this was an agreement between the 13 original states of the United States of America, and it's the first governing document.
<em>The Framers of the Constitution</em> were 55 visionaries appointed as delegates and founded the principles to guide and support the nation onward.
<em>The Commerce Clause</em> gave congress power to regulate commerce: with foreign nations, with native tribes and with between the states; and had been allowed by "<em>The Articles of Confederation</em>".
Answer:
Organisms interact with each other and their ecosystem constantly, producing a constant flow of energy and matter.
Explanation:
Each of the living things on our planet needs energy and matter to survive. In order to do this, they must interact with the environment around them.
This is where sunlight, the climate of a habitat, water and even other living beings come into play.
The energy is constantly renewed in the ecosystems of these living beings, however matter does not. We can find matter in living beings that die, and this is where decomposing organisms appear. They are in charge of releasing disposable and decomposed matter into the atmosphere, which after being released will be used by the producing organisms.
Basically matter and energy are the basic components of the food chain, where matter is transferred and energy is renewed.
