Answer: A cell
Explanation:
The tissue is inside of the organ, which is inside of the organism, the next thing would be a cell, and then after that the next smallest would be a molecule
Answer:
Natural selection
Explanation:
Microevolution refers to changes produced at a lower level than species. In genetics, microevolution is the change in the allelic frequency perceptible in a few generations. Most of these naturally produced changes by mutation, natural selection, genetic flux, genetic drift.
After the drought on Daphne Major, many of the plants producing small-sized seeds decreased their reproductive rate drastically. Consequently, there were almost no seeds available for the medium ground finch to feed. The population of this species also decreased to only a hundred birds over two years. Weather conditions and food availability influenced the survival of the animals.
With time, the finched population increased again, but now, the average size of the beaks was larger. The trait modification was related to the availability of only larger seeds with thick husks.
Eating large seeds with medium or small-sized beaks was impossible, so Finches needed to adapt, developing larger beaks to crack open the husks and eat the contents of the seeds.
<u>Natural selection was responsible for the rapid change in the finches´ population beaks size after the drought. </u>The evolutive force modifies the allelic frequencies, increasing the frequency of genetic variants that expressed the larger beak size and declining the frequency of the alleles that expressed smaller beak size.
Positive control is Ginger root (should indicate the presence of amylase)
Negative control is Cellulose (should not contain amylase)
Here the presence of amylase is tested by testing the presence of starch using an IKI solution. Saliva is included in this experiment because it contains the enzyme amylase.
A cell is the smallest unit<span> of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the</span>basic<span> building blocks of all organisms.</span>
<span>Human influences in the Arctic are both seen and unseen. Human activity has seen a dramatic change in the arctic due to climate change. This is, by far the worse impact human activity has had on the globe, but in particular, the Arctic is fragile. Other human influences are the vast and untapped oil reserves in the Arctic have made it a target for oil companies. Oil and gas pipelines are a huge human influence in the Arctic. Garbage and other waste not to mention the impact of the oil and gas industry have left some parts of the Arctic polluted.</span>
