The answer is B. hope this helps I have an 86.6 in biology.
A. heterotrophic eukaryotes
Answer:
The correct answer is - neurulation
Explanation:
The neural groove is a groove of the neural plate which is a thick plate that is enclosed by the neural folds of an embryo. The neural grove forms the neural tube which expands and develops into the spinal cord and brain.
The development of the neural grove is taken place during the process known as neurulation which is characterized by all characteristic development related to the neural groove and ventricular system.
The answer is A. Oligotrophic lakes are clear and hence
have little vegetation in them (hence no net primary production) that
could initiate the process of eutrophication. Eutrophication is brought about when bacteria
break down the high amount of organic matter hence reduce the oxygen supply in
the waters.
Many motor units in a muscle are stimulated in quick succession. The most likely to happen is that the contractions will produce tetanus.
A motor unit is made of a motor neuron and the skeletal muscle fibers innervated by that motor neuron's axonal terminals. A group of these motor neurons work together to coordinate the contraction of a single muscle. During a concentric contraction, a muscle is stimulated to contract according to the sliding filament theory, which occurs throughout the length of the muscle, therefore, generating a force at the origin and insertion, causing the muscle to shorten and changing the angle of the joint.