The movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.
Answer:
Scientist 1
Explanation:
<em>The conclusion of scientists 1 is valid.</em>
Human activities such as burning of fossil fuels, agriculture, deforestation, etc. leads to the emission of carbon in the form of carbon dioxide into the atmosphere. <em>An increase in the population of a city will only lead to an increase in these activities and hence, an increase in the amount of carbon emitted into the atmosphere.</em>
Also, volcanic activities leads to the production of volcanic gases which is a mixture of carbon dioxide, oxides of sulfur, nitrogen, etc.
<u>However, an active volcano that is several miles away from the city might not be a major source of carbon in the air above a large city. The carbon dioxide produced from such volcanic activity thins out before reaching the city.</u>
Photosynthesis<span> makes the glucose that </span>cellular respiration<span> uses to make ATP</span>
<span>Cortisol level is low and ACTH is high. This is signs of primary adrenal insufficiency. Low cortisol caused by damage to the anterior pituitary, and ACTH is elevated to compensate.</span>
Factor<span> in the generation of large coastal </span>surges<span>. Corresponding ... larger than </span>Hurricane<span> Camille </span>during<span>its entire passage through the Gulf of ... Consequently, </span>most hurricane surge<span> studies, for both ... </span>factors<span>for </span>hurricane surge<span> response (</span><span>e.g., Berke et al. 1984). ... cal </span>storm<span> events with </span>coastal erosion<span> and overwash</span>
