An ecologist conducts<span> a </span>greenhouse experiment<span> to </span>study<span> the </span>effect<span> of nitrogen </span>concentration<span> on the</span>productivity<span> of </span>sunflower seedlings<span>. What is the </span>independent variable<span> in this </span>experiment<span>? make predictions about how nature works</span>
Answer:
answer below
Explanation:
this seemingly isolated event is just one part of the global climate system and can actually have major influences on the weather and climate around the world
Answer:
gravitational force
Explanation:
Gravitational force is the force responsible for firmness while standing.
The subject area of Chemistry is a very broad area. So, it is classified into sub-branches like inorganic chemistry, organic chemistry, physical chemistry, quantitative chemistry and many more. But when the basis is on the composition of elements, it is divided into inorganic and organic chemistry. Compounds containing the element Carbon are all under organic chemistry. If they do not contain carbon, they are considered as inorganic.
During the early times, the only differentiation between these two sub branches is the vital theory. This theory proposes that all things that have life can be only made by nature alone are inorganic. But thing was disproved by Wohler when he was able to synthesize urea from inorganic compounds. Thus, today the only differentiation is the carbon atom.
Answer:
During the course of a continuous isometric contraction of given strength, the electrical activity progressively increases. This is due to recruitment of motor units taking place to compensate the decrease in force of contraction occurring in the fatigued muscle fibres.
Explanation:
