Answer:
Planets closer to the sun orbit it faster than planets further away from the sun.
Explanation:
<span>Anything in an organism's environment that causes it to react is called a STIMULUS. A stimulus is defined as an impulse that evokes a specific functional response from an organism. In living organisms, stimulus can occur both internally and externally. Stimulus generate appropriate response in living organisms. Thus, the correct option is C.</span>
Endoplasmic Recticulum:
<span>a network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis</span>
The subdural space is the space that exists between the meningeal layer of the dura and the arachnoid mater.
<h3>What is subdural space?</h3>
The subdural space which is also called subdural cavity, is a space within the dura mater that collects blood from the small veins of the brain so we can conclude that subdural space is the space that exists between the meningeal layer of the dura and the arachnoid mater.
Learn more about veins here: brainly.com/question/393019
What observations are you talking about