<span>A physiological or psychological dependence on a substance or activity</span>
Answer:
Electric signals --> Nervous System
Chemical Signals --> Endocrine System
Nervous system made up of neurons
Neurons send messages using action potentials
Neurons pick up signal as its dendrites pass the signal down the axon into the axon terminals and into the synapses
Synapse drops neurotransmitters into the synaptic cleft
This signals neuron #2 to pass the message on
Hope that helps!!
Explanation:
The right answer is True
The influence of man on the atmosphere (increase of carbon dioxide) has caused a change in the whole biosphere (melting of the pack ice, migration of animals to better adapt to global warming).
The idea of a degradation of the environment in which humans live on the earth became a majority in the late twentieth century. More than an idea, the facts show that the evolution of the environment is representative of a degradation of the habitat, attributable to the human activity.
To measure this degradation, several indicators can be used:
*Apparent pullutions, ie traces of compounds synthesized by humans from natural environments: soils, air and water. These indicators are more commonly referred to as water quality, air quality ...
*The scarcity of natural resources, renewable or not,
*Loss of biodiversity, which is even considered a key indicator of the state of the environment.
