Answer:
Reflex action is the sudden uncontrolled reaction towards a certain stimuli eg response to hot iron
Reflex arc is the path taken by reflex action to a certain stimuli
Diagram depends to
Receptor(eg skin), receptor nerve(sensory neurone),centre reflex arc(spinal cord most of reflex action) they met relay neurone, motor neurone and ends at reflexor (eg muscle)
Rose is an example of a producer.
Answer:
B) 5m/s^2
Explanation:
The formula for acceleration is 
vf is the final velocity which in this question is 25m/s
vi is the initial velocity which in this question in 0m/s because it says "A <u>stopped</u> car"
t is the time which is 5 seconds
When you put these numbers into the formula you get 5m/s^2
Answer:
Option A, keystone species
Explanation:
Keystone species are responsible for controlling any species from becoming dominant over all other species. The keystone species are found at the top of all the energy pyramids and food chains.
They control the explosion of population of prey and hence regulate the overall ecological diversity.
Some common example of keystone species is as follows –
Bison, prairie dog, large mammalian predators,
Hence, option A is correct
