<span>The correct option is: IT HELPS CARRY AN IMPULSE BACK TO THE NEXT NEURON. There are two types of neurons, excitatory and inhibitoty neurons. Both serve to transmit impulse from one point to the other. Each neuron usually makes several connections with other cells.</span><span />
Answer:
There are two primary factors: size and distance from the Sun. Gravity helps planets and moons to hold on to their atmospheres, so small planets/moons such as Mars and the Moon have thin atmospheres. The reason why the outer planets are larger is probably down to two major factors. The first is simply the amount of material available which may be accreted to a planet. Clearly, the further away from the Sun, the longer the orbit (twice as far means an orbit twice the physical length).
Explanation:
Answer:
Answer is clearly explained in explanation.
Explanation:
In evolutionary biology, the convergent evolution is the process by which organisms from different evolutionary lines independently develop similar adaptations or features in response to similar environmental conditions. North American cacti and African euphoria are clear examples of this concept. Both types of plants have developed thick, juicy stems that are ideal for storing water and protecting thorns, and both are well suited to deal with the rain scarcity and dry climate of the desert regions. The two plant species belong to different plant families and are distant relatives in the phylogeny of flowering plants; However, their common characteristics indicate that they are the product of a converging evolution. The convergent development has enabled the two species of plants to develop similar adaptations to facilitate their survival in the hot and dry desert environment in which they live.
Respiratory system, excretory system, digestive system
