A scale shows the distances bewtween places on a map.
The correct option is A.
In the question given above, we are told that the number of trees in the ecosystem is 1,000,000; this figure far outnumber that of all the other organisms in the ecosystem. The plants are the producers in any ecosystem and they serve as sources of food for all other organisms in an ecosystem. Based on the number of trees present in this ecosystem, the pyramid of number and the pyramid of biomass will be upright, this is bcause the number of producers far outnumber the number of the consumers. A pyramid of number or a pyramid of biomass is said to be inverted if the number of producers is less than that of the consumers.
In aluminium fluoride, aluminium carries positive charges so fluoride should carry negative charge to be electrically neutral.So for aluminium ion with three positive charges fluoride ion should possess three negative charges to make aluminium fluoride electrically neutral.
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Answer:
Explanation:
porque una persona con dos alelos normales presentará un fenotipo normal, mientras que si las dos copias del gen son el alelo mutado que producen una enfermedad, el fenotipo expresará los síntomas característicos de esa enfermedad.
