If we take the five years of rainfall given in the table as representative of the rainfall variability of the study area, then we can say that dry years are years with rainfall of 100 cm/year of less, whereas wet years are greater than 100 cm/year. We see from the table, that during the dry years, the chicory seems to be outcompeting the sweet pea, whereas during the wet years, the sweet pea outcompetes the chicory. So given this limited information, we can predict that the chicory would dominate. However, it must be pointed out that to derive a scientifically-defensible conclusion, we would need more replicates (study plots) studied over a longer time period.
One hypothesis that is in the scientific community which relates to the origin of the building blocks for life is that they were formed when lightning struck water.
a ecosystem refer to a river
Answer: Microwaves and X-rays have different wavelengths and frequencies. Microwaves fall between infrared radiation and above radar radiation. X-rays fall above ultraviolet radiation and below gamma ray radiation. Visible light falls between infrared and through ultraviolet.
Explanation:
Answer:
The cell membranes are <u>Selectively permeable</u> or <u>semi-permeable.</u>
Explanation:
The cellular membrane allows the free passage of only a few substances while it blocks the pass of others.
Cellular membranes are <em>composed mostly of lipids arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other</em>, constituting the internal part of the membrane.
Through this lipidic bilayer, some molecules can move from one side of the cell to the other. This free movement is called simple diffusion, and it depends on the substances' sizes and their concentration on each side of the membrane.
The membrane is selectively permeable because it only let small substances to move through it, with no protein mediating their passage.