The factor that may have caused this competition is the scarcity of food.
<h3>What is natural selection?</h3>
Natural selection has to do with the idea that species that are better adapted to their habitat live longer and have the opportunity to reproduce and transfer these favorable traits.
The factor that may have caused this competition is the scarcity of food. The original ground-dwelling frogs have different genetic make up which allowed then to live in different conditions ultimately making it possible for them to adapt to various conditions.
Different species of frogs developed as they lived in different niches because the organisms had to develop traits that enable them to survive in new niches which were passed on to offspring ultimately leading to the emergence of new species.
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water is the essential element for life. about 71% of the total Earth is covered by water, mostly in the form of rivers, sea, oceans and glaciers. similarly, the water cycle defines the processes through which the water on earth remains balanced for all living and non living things. there are various stages which occurs in equilibrium, such include;
1. Evaporation
2. Transpiration
3. condensation
4. precipitation
water evaporates, turns into clouds and condense to make rain and snow and came back to earth in the form of precipitation.
however there are times when the process of water cycle gets disrupt causing famine, drought, floods, tsunami etc, which is extremely dangerous for life on Earth.
A codon is a sequence of three bases found on the messenger RNA (mRNA) molecule which is translated to produce an amino acid. Each amino acid is coded by one or more specific codons. If the codon is changed through a mutation, the amino acid produced may be different. However, in this case, the other codons that produce Leucine are:
UUA, UUG, CUU, CUC, CUA and CUG
So the code CUU could mutate to CUC, CUA or CUG and leucine would still be produced.
<span>Endocrine glands are ductless or tubeless organs or groups of cells that secrete hormones directly into the bloodstream.</span> <span>The endocrine glands are part of the endocrine system and include the pineal gland, pituitary gland, pancreas, ovaries, testes, thyroid gland, parathyroid gland, hypothalamus and adrenal glands. The endocrine system maintains homeostasis, controls the growth and development, controls metabolism (body energy levels), reproduction, response to stimuli (stress and/or injury).</span>
The giraffe is the organism which has systolic pressure among the other options.
The giraffe has one of the highest blood pressures of any mammal. It reaches pressures of up to 280/180 mm Hg, which is twice that found in humans (120/80 mmHg).
In their heads, a giraffe’s blood pressure remains about equal to a human’s. And they maintain that lower pressure in their heads whether they are chomping leaves from the limbs of tall trees or sipping water at ground level.
A giraffe’s large neck veins contain a complex system of valves that stops the blood from flowing backwards and pooling when it dips its head, which can be a full 20 feet differential from upright in a full-grown giraffe.
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