Explanation:
Carrying capacity is determined by limiting factors.
Carrying capacity is determined by limiting factors which affect the amount of resources available. Limiting factors may include water, space, nutrients, minerals, light, etc.If we're discussing carrying capacity in the context of a species, the number of available mates, predation, disease, or competition with another species could determine the species' carrying capacity. For example, a species of bird may have plenty of space and but if it needs to compete with another species for food, the degree and extent of competition will limit the population.
Or there may be plenty of available habitat, food, and water for tigers in India, but if there are only a few tigers breeding and producing offspring, the carrying capacity of the species will be determined by the number of females producing young.
Many of these same limiting factors apply when we refer to the carrying capacity of an ecosystem. For example, in a desert ecosystem, there may be plenty of available space, but the number of organisms the system can hold may depend on the amount of water.
Another ecosystem may be limited by nutrient-poor soil. If the soil in an area is low in nutrients, fewer photosynthetic plants will be able to grow, which means less food for organisms consuming the plants, which means less food for organisms that eat those organisms, and so forth. The nutrient concentration of the soil affects the carrying capacity of the entire ecosystem.
Answer: cell wall
Explanation: a cell wall is a complex protective structure which gives shape and protection to a plant cell.
Among the functions of a cell wall is maintaining the structural integrity of a cell and providing strength. Because a cell wall has semi-permeable outer layer, it filters molecules that pass in and out of the cell hence, acting as a defense structure against a variety of external factors. It has pores and receptors that regulate various functions of the cell.
Answer:
Salmon populations in the United States is declining due to the following factors:
1. Over-fishing and human activities have put a major influence on the population of salmon.
2. Due to industrialization, urban growth, unplanned farming, deforestation, and pollution would have imparted strains on the stocks of salmon. Apart from this chemical contamination from the industrial run-off and agricultural activities are also declining populations of salmon.
3. Genetically modified fish from hatcheries usually escape and interbreed with wild fish, thus, changing the genetic features of the populations.
4. Construction of hydropower dams is also a major cause of the salmon population declining.
I can't see the whole image, but I would say A, since it is the only statement. B and D are steps in the experiment, and D is a question, not a statement.
Answer:
Answer: Option A.
Explanation:
Haploid cell is the cell that have a single set of chromosomes . In human, haploid cells have 23 chromosomes compare to 46 number of chromosomes diploid cells have.
