Hey There!
Here is your answer:
Your answer is that a experiments should be controlled because the experiment could go out of control which could harm or hurt someone.
Also the definition of a controlled experiment is a part of the experiment that's not touched.
Ex: Water is your controlled experiment that's because our not doing anything to the water.
If you need anymore help just ask me!
Hope this helps!
The answer is speciation by geographic isolation. When the population of a species gets separated due to reasons such as continental drift, mountains, canyons, etc. then each separated group of population may survive and adapt to their respective environment leading to speciation. These barriers do not allow the evolving populations to interbreed initially and over time when they evolve into different species they become completely reproductively isolated.
Answer:
J. W. Tutt suggested that peppered moths were an example of natural selection.
Explanation: Before industrial revolution, the population of white peppered moth is high as compared to dark peppered moth because white peppered moth can't be seen at night by the birds. After industrial revolution, sooth is spread on the surface of the trees which make easy for the bird to see white peppered moth and feeds on them. Population of white peppered moth decreases while the population of dark peppered moth increased because they cannot be seen in the dark due to black color of sooth.
Answer:
<h2>B</h2>
Explanation:
1. Fatty acid synthesis: it is the anabolic process though which the creation of fatty acids occurs in the cell from the molecules like acetyl-CoA and NADPH.
2. Fatty acid synthesis occurs by the enzyme fatty acid synthases.
3. Most of the acetyl-CoA which is required for the synthesis of fatty acids is derived from carbohydrates through the glycolytic pathway.
4. Fatty acid synthase of mammalian cell Contains ACP, which carries acyl groups attached through thioester linkages.
Ecosystem. it is defined as a biological community of interacting organism and their physical environment.
