When Sarah performed this experiment, she changed the levels of nitrogen in order to observe the changes in the morphological features of the plant.
All of the characteristics of the plant that she observed were dependent on multiple different things, but the level of nitrogen was an independent variable that she was changing at her will.
Answer:
c. The current carries heat from the north pole to the equator
Explanation:
They have to carrier heat because in the north part is colder.
1.) Neurons, they transmit nerve impulses<span>.
2.) </span>Neuroglial cells, non-conducting cells of the nervous tissue.
<em>Protein synthesis is the process whereby biological cells generate new proteins and it is balanced by the loss of cellular proteins via degradation or export.</em>
It helps the body build muscles and protects from germs and virus.
Turbidity<span> is the cloudiness or </span>haziness<span> of a </span>fluid<span> caused by large numbers of individual </span>particles<span> that are generally invisible to the </span>naked eye<span>, similar to </span>smoke<span> in </span>air<span>.</span>