The exacted number sciences don't know.
Answer:
Innate immunity is a nonspecific defense mechanisms that play its role as soon as an antigen appear in the body (it is relatively rapid but nonspecific and because of that it is not always effective)
Explanation:
The barries of innate immunity are:
Skin: At Epidermal surface, its protective aspect are keratinized cells that lives on the surface, known as Langerhans cells.
Skin sweat or secretions: Their specific defense is sweat glands and sebaceous glands, and their protective aspect is low ph and washing action.
Mucosal surfaces: they are at the mucosal epithelium, and their protect aspects are nonkeratinized epithelial cells.
Oral cavity: They defend salivary glands through Lysozyme
Law of demand
The regulation of demand for states that because the rate of a great decrease, the amount demanded of that correct increases.
<h3>What are the five Determinants of Demand?</h3>
The five determinants of demand are:
- The rate of the goods or service.
- The earnings of consumers.
- The expenses of associated items or services—both complementary and acquired together with a selected item, or substitutes sold rather than a product.
- The tastes or alternatives of customers will pressure demand.
- Consumer expectancies about whether or not charges for the product will upward push or fall withinside the future.
For combination demand , the wide variety of customers withinside the marketplace is the 6th determinant.
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Answer:
True?
Explanation:
maybe I think true since different types of plants have different structures and because of the structures maybe a plant can reproduce like for a long time later and another plant can have a different structure and reproduce faster. I’m just 11
Answer: B - mosses and lichens that can grow on Rocky surfaces
Explanation: Primary succession usually starts or begins on rock outcrops. It could include bare surfaces, volcanic mountains or an area (water surfaces) with no soil.
In primary succession, pioneer organisms including algae, lichen, mosses and fungi usually are the pioneer species. Other abiotic factors like wind and water play roles of normalizing the habitat.
