1. Exchange materials with its environment efficently
Answer:
C. About 18 percent of the variation in blood pressure can be explained by a linear relationship between blood pressure and caffeine consumed.
Explanation:
Here, r = 0.428
∴ We can say it will give a positive curve, as 0.428 indicates it is a positive correlation.
Though the amount of correlation is low, still it is positive and more than 0.4
So, nearly about 18% of the variation in the blood pressure can be observed by the consumption of caffeine water. As consumption of caffeine water and blood pressure is both increasing so we can say that r= 0.428 will give a positive linear curve.
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The continued presence of vestigial structures suggests that these structures do not have a great impact on fitness, like in the whale, because even with these structures, the whale has been able to survive and reproduce.
Answer:
Parasitic
Explanation:
The plants that are described are typical example of parasitic plants. These types of plants have a parasitic relationship with the other plants, at least with the ones that they can use. In order for them to grow, survive, and prosper, these plants need a host plant. They attach to the host plant's steam with their miniature claw like organs, and use them for support to grow upwards, but also to extract nutrients from the host plant. While this leads to to parasitic plant's survival and prospering, the host plant is suffering, and gradually the parasitic plant will suck every nutrient out of the host plant and kill it. Without a host plant, these plants would find it extremely hard to survive, and the chances are very high that they will die because they are not well suited to get nutrient on their own.
