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2.Allergens cause an allergic reaction. T<span>heir immune system produces antibodies, that are triggered depending on what substance it is.
3.Asthma is classified as an allergy because substances may trigger asthma and sometimes they do not, just like how certain substances cause the allergies.
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B.Sometimes true,As you sometimes to need to learn on the alternative provided in getting a solution that is factual
Answer:
Energy pyramids is representation of food chain where producers lie at the base of pyramid followed by primary, secondary and tertiary consumer. A tertiary consumer lies at the top of the energy pyramid .
Explanation:
An ecological pyramid is a chronological arrangement of organism in which the organism producing the food lies at the base of pyramid and remaining all organism lie above it.
Each level of an ecological pyramid is called a trophic level and an organism lying at any trophic level feed upon organism lying in trophic level prior to it.
Energy transferred to an organism lying at certain trophic level is 10% of the energy contained in an organism lying at its lower trophic level. remaining 90% of the energy is used by an organism for its internal metabolic process.
