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Answer:
We use models in order to represent Earth's processes on a smaller scale so that it is easier to study them. ... Changes in any part of the Earth's system affects all other spheres.
Answer:
A postsynaptic potential is defined as excitatory if it makes it easier for the neuron to fire an action potential. ... A postsynaptic potential is considered inhibitory when the resulting change in membrane voltage makes it more difficult for the cell to fire an action potential, lowering the firing rate of the neuron.
Ecosystems need producers because they are the start of the food chain.
Producers are consumed by first consumers, the second consumers and so on.
Chemical bonds formed when atoms gain/lose electrons, and oppositely charged ions attract. Ion. A particle having an electrical charge. Electronegativity difference between 0 and 0.3. Characterizes onpolar covalent bond.
