Answer:
A) receptor, sensory neuron, interneuron, motor neuron, effector
Explanation:
In a reflex arc, the receptors present in the skin receive stimulus and generate afferent impulse. The sensory neuron transmits the impulse to the interneuron. Interneuron is present in the spinal cord and activates it. The interneuron then sends back the impulse through the motor neurons to effectors whcih are present in the muscles for the response.
Answer: Muscular system because it is a complex body system, the others are organs in cells
Survivorship curve = so, first of all, it's a curve, as in a graph.
It describes "survivorship" - the rate of survival, in other words: out of 100 organisms that are born, how many survive. This rate is different among species, for example, most humans live out to most of their life span, and almost all can survive well beyond a reproductive age.
However, in frogs for example, many many individuals are born, but only few can survive to adulthood: most die very young, before reproductive age.
So if you hear about a new species: let's say dogs, and you want to know how long they would live, you would look at their sirvivorship curve (and in some breeds of dogs, those that are likely not to be in shelters, but in homes, the survivorship curve would be similar as in humans: almost all individuals born can live long.
Brain size has increased nearly 3x in 4 million years.
