Answer:
oxygen
Explanation:
Living organisms often contain amounts of several elements, but the most abundant ones are oxygen, carbon, hydrogen, nitrogen, calcium and phosphorus. But Oxygen is the most abundant element contained within living organisms, composing about 65% of the human body.
Based on the picture, how did the sunflowers show their competition? Why should they compete?
I choose this as a scientific question because there are numerous sunflowers that occupy the land. Living things try to survive with their environmental conditions. Thus, competition happens among the organisms.
<span>Science is a practice of gaining comprehension of the nature of materials and phenomena by gathering and evaluating evidence. A scientific study is based on an hypothesis, a theory of causality. As the body of scientific knowledge increases, the design of scientific studies is informed by previous discoveries.</span>
The answer is an overhunting.
<span>The bottleneck event means drastic reduction of the population size because of environment changes. The consequence of this is the reduction of genetic variation. The bison population is a good example of the population bottleneck. The bison population drastically reduced its size due to overhunting which culminated at the end of the 19th century, when bisons almost extinct. </span>
A,B,C and D
A. increase in the number of available neurotransmitters
B. decrease in the number of available neurotransmitters
C. increase in the number of receptors and receptor sites
D. the ability of the synapse to change in strength and function when the pathway is overused or underused
