Answer:
The basic principle of Darwinism is "survival of the fittest". Darwin's theory stated that all species of an organism develop through the natural selection of small, inherited variations in organisms that increase the individual's ability to compete, survive, and reproduce in the wild.
Darwin's trip to the Galapagos Islands actually was the beginning of his Social Darwinism Theory. During his visit to the islands, Darwin noted that the unique creatures were similar from island to island, but well-adapted to their environments. This led him to ponder the origin of the islands' inhabitants.
Darwin's finches (the Galapagos beaks) are considered to be the world’s fastest-evolving vertebrates. This is because their appearance and behavior quickly adapt to the closed and rapidly changing environment on the Galapagos Islands.
Answer:
Adaptation to there environment
Adhesion of water to the surface of a material will cause an upward force on the liquid. The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the surface material is stronger than the cohesive forces between the water molecules.
Answer:
Signal transduction pathways
Explanation:
Plant hormones act by directly affecting the activities of signal transduction pathways.
Signal transduction pathways are involved in the transfer of signals from outside of the cell to the inside of the cell for the regulation of various cellular activities. For this, the extracellular signalling molecules bind to the receptors that are located on the cell membrane. After their binding due to some change in the receptor molecule, a signal is triggered in to the cell and thus information from outside of the cell is transferred to the inside of the cell through these transduction pathways.
Plant hormones affect these pathways and as a result membranes, enzymes, and genes are also influenced by the plant hormones.
To prove that a certain fruit (in this case, an orange) indeed contains a certain compound (in this case, vitamin C); then the vitamin C should be extracted and isolated from the orange and must be confirmed by molecular analysis. The extraction process involves using chemicals (i.e. 6% MPA), and procedures such as centrifugation and filtration. Then the extract is stored and subjected to high-performance liquid analysis (HPLC) to measure the vitamin C content.
