Answer: (1) The populations breed separately.
Explanation:
The genetic diversity can be define as the total number of different types of genes is present in a particular species. Genetic diversity makes the way suitable for the survival of the population of species in changing environment.
According to the given situation, if the two population breed separately then then no new genes will be added to the gene pool of the species and hence, the genetic diversity will be lost.
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A diet high in saturated fat normally supports fertility. - False.
Thus making it, option B.
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Answer:
1. High osmotic pressure due to the hypersaline nature of marine habitats
2. The dependence of flowering plants on pollinating insects for fertilization. These insect pollinators are however, absent in the marine environment.
3. Competition from already-established sea weeds and grasses provides another challenge to flowering plants invadingnthe oceans.
4. Constant changes in the environment as well as temperature changes too
Explanation:
The marine environment is a hypersaline environment with a high salt concentration relative to that of the plant cell. Due to high salt concentration of the marine environment, their is high osmotic pressure on living oragnisms found therein. Organisms must have well-adapted osmo-regulatory mechanisms to counteract the high osmotic pressure of their environment. Therefore, flowering plants face the challenge of removing excess salt from their cells or else lose water to their environment, hence resulting in the death of the plant. However, most flowering plants lack this ability and thus, have found it difficult to invade the oceans.
Flowering plants depends on insect-pollinators for fertilization. However, these insect are not found in the oceans, and as such, it is difficult for flowering plants to invade the oceans.
Well-adapted seaweeds and grasses serve as competitors for any invading flowering plant. Since the flowering plants are not yet adapted for life in marine habitats, they lose out in this competition.
The oceans are constantly in a state of frequent turbulence and change due to tides and currents. Also, the temperature of the oceans are very low and fluctuations in the temperatures of the ocean do occur, utimately serving as obstacles to invading flowering plants to adapt to life in the oceans and seas.
I believe the answer would be D, in the sun. Every form of life on Earth depends upon others, and without sunlight, most life on Earth would cease to exist rather quickly.
More specifically, because animals cannot make their own food, they rely on plants to give them the energy needed to survive. Plants feed animals called herbivores, herbivores feed animals known as carnivores and the decomposers feast on the waste left behind to begin the cycle again. This continuous loop is commonly called the food chain. Without sunlight to help plants make food, most life could not exist for very long.
