Answer: Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time.
Explanation:
If purple is dominant, the genotype of the purple flower could be PP or Pp, as both would give a purple colour. However, if the crossed flower turned out to be white, we could say with certainty that the genotype of the purple flower is Pp as the genotype of the white crossed flower would be pp, which would not be possible if the purple flower's genotype was PP.
Blood vessels that have thinner walls that are more likely to collapse when blood is withdrawn during a venipuncture are called veins.
Differently form arteries, veins are blood vessels with thin, less muscular walls. Veins have thinner walls because the blood pressure in them is much lower.
So, as a result of common intravenous injections (such as venipuncture), collapsed veins might occur. Veins are then temporarily blocked.
The kind of investigation used in the scenario above will be either primary or secondary investigation.
<h3>Why would they use primary or secondary investigation?</h3>
If they wanted to carry out an investigation from scratch using their own parameters, case-controls, and random sampling from scratch perhaps so they can have control, then that would be the primary investigation.
Secondary investigation on the other hand gleans off information already researched and provided at the primary investigation level.
Learn more about primary investigation at:
brainly.com/question/13672588
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