The findings from the two expeditions, found that the patch covers 1.6 million square kilometers with a concentration of 10–100 kg per square kilometer. They estimate an 80,000 metric tons in the patch, with 1.8 trillion plastic pieces, out of which 92% of the mass is to be found in objects larger than 0.5 centimeters.
Answer:
Over time, plants had to evolve from living in water to living on land. In early plants, a waxy layer called a cuticle evolved to help seal water in the plant and prevent water loss. ... A later adaption for life on land was the evolution of vascular tissue.
<em>A control is that group in an experiment that does not receive any treatment and is used for comparison with the test result.</em>
<u>Answer:</u> <em>A) a control</em>
<u>Explanation:</u>
In the experiment mentioned, the control is missing because the test group as mentioned are the plant set that receives the treatment that is the different concentration of nitrate and phosphate.
The effect of these nutrients on growth will be observed and evaluated. The time period of the experiment is one month which might exceed.
