Answer:
Deep hydrothermal oceans and the atmosphere
Explanation:
Earth or space are the two possible origins of simple organic compounds on early Earth.
Answer:
Flukes are principally parasites of the liver of various mammals, including humans. Capable of moving along the blood circulation, they can occur also in bile ducts, gallbladder, and liver parenchyma.
Earthworm belongs to the group annelida.
They have a true body cavity which allows true organs to be present and protected in the body structure.
They also have segmented body.
A polar molecule has a net dipole because of opposing charges. Nonpolar molecules share/give electrons . If the electrons are shared equally, the molecule is nonpolar, because there is no charge. I hope this helped ^^
Answer:
The correct answer is option (a) "Increase the amount of neurotransmitters secreted".
Explanation:
Presynaptic neurons are helpful cells at chemical synapsis because they increase the intensity of the transmitted signals by increasing the amount of neurotransmitters secreted. The neurotransmitters are the carriers of information from the pre-synaptic—sending—neuron to the post-synaptic—receiving—cell, which results in an action potential.
