volume of a sphere=(4/3)πr³
1- Paleozoic era
2- mesozoic era
3- Cenozoic era
Well one thing u could do is to reduce the amount of fossil fuels burning (idk how, maybe finding a better alternative to burning them) another way would be planting more trees, or buy energy efficient products. Basically these things just reduce the carbon footprint by reducing the amount of fossil fuels (because we only have a limited amount) i hope this helped
Diffuse modulatory synapses or neuromodulation function different than simple point-to point synapses.
1. Number of postsynaptic neurons
In neuromodulation neuron uses one or more neurotransmitter to regulate several neurons. In Synaptic point-to-point transmission only one particular neuron receives signal from the presynaptic neuron.
2. Neurotransmitter sin neuromodulation (neuromodulators) are not reabsorbed broken down by the pre-synaptic neuron like those in classic synapse. Neuromodulators stay in cerebrospinal fluid.
3. Receptors are also different: the receptors for the neuromodulators are typically G-protein coupled receptors while in classical chemical neurotransmission, they are ligand-gated ion channels.
4. Neuromodulation is a slow process, while classic synaptic transmission occurs fast.
<u><em>7.</em></u>
Acomodation is the process in which the lens adapt to the distance of the object you look at.
During acomodation The lens changes shape and during the pupil reflex the pupils changes size so the answer is <u><em>C</em></u>
<u><em>8.</em></u>
The cerebelum is not attached to the spinal cord, but to the brainstem through cerebellar peduncles
medulla oblongata is part of the brainstem and it is attached to the spinal cord so the answer is <u><em>B</em></u>
<u><em>9.</em></u>
Insulin is a hypoglicemiant hormone that stimulates glycogenesis which is the synthesis of glycogen from glucose, hence the answer is <u><em>C</em></u>
<u><em>10.</em></u>
You get a fight or flight response which is mediated by adrenaline.<u><em> B</em></u>
<u><em>11.</em></u>
Adrenaline increases sweat production and decreases digestive activity so the answer is <u><em>A.</em></u>
