Answer:the deficiency of vitamin C causes connective tissue changes throughout the body.The disease known as scurvy results from lack of Vitamin C.In this condition, the synth sized colagen is unstable and leads to joint pain,bleeding gum slow wound healing and dry skin
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Explanation:
The different layers of the earth have different densities, and the seismic waves produced during an earthquake travel at different speeds through these layers. By measuring the different speeds, we can clarify the presence of layers within the earth, as well as their densities. Waves will travel faster through thinner layers, and slower through more dense layers.
The removal of predators from these guppys would most likely result in the explosion of the population of guppys and this in turn would most likely upset nature's balance for example the extra guppys would eat more of the available food and strain the food resources of their apparently marine eco-system.
Answer:
A problem that confounds attempts to organize the entire living world for study is the need of evolutionists to bring the entire diversity of living things ultimately into.
In biology, living things can all be classified in accordance with other living things that share a specified set of common characteristics. A major challenge to the process of classification is that, in evolution, that this involves the need to classify all living things. The challenges being that there are many species on planet earth that once existed and are now extinct (i.e. they cannot currently be studied in living form) and that there may be species that do exist that have yet to be discovered and therefore cannot be classified. Finally, due to the sheer number of species on earth, it will literally take hundreds of years for scientists to classify all species.
A tetrad is a foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids