An organism's niche includes the type of food it eats, how it obtains its food, and what its predators are. Here is a quizlet website that has more answers to questions like this one: https://quizlet.com/81207203/section-4-2-review-flash-cards/
Your answer is: Niche
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They leave no record of their existence because it's rare that fossils form. You need the right conditions in which the animal's remains are covered in silt, dirt, and rock layers in order for a fossil to form and therefore preserve the animal's remains in rocks. Otherwise, the animal's remains will be eaten by other animals or eventually rot away.
The right answer is cyanobacteria.
Cyanobacteria are a division of Gram-negative aquatic bacteria capable of photosynthesis. About two-thirds of the species studied are capable of stabilizing nitrogen and are therefore involved in the nitrogen cycle in the biosphere.
These cyanophytes contain three pigments, green, blue and red.
Answer:
D) refractory period
Explanation:
Electrical Muscle Stimulation is caused by the electrical impulses from brain that allows muscles to contract. A neurotransmitter junction between cells and neuron is presnet which cause action potential for muscle conraction.
The refractory period is the time when the cell is repolarizing. During refractory period cells re nable to repat its action and takes time to prepare the membrane for next stimulation. An action potential can't be transmitted until there is a potential across the membrane again.
Hence, refractory period is the time during which muscle is unable to respond to the stimuli.
The left and right hemispheres of the brain are connected by <span>the </span><span>corpus callosum. </span>
