The upright pyramid of number cannot be seen with ecosystem.

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ALake

BGrassland

CPond

DForest

Answer:

Pyramid of numbers represents the number of individuals per unit area at various trophic levels.
It is always upright in grassland, pond and lake ecosystems.
But in a forest, it is a partly upright pyramid of numbers because the number of producers are lesser in number and support a greater number of herbivores and which in turn support a fewer number of carnivores.

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How has modern transportation affected the role of the camel for caravan traders?

Modern mechanized transport has significantly reduced the reliance on camels.
The development of new transport methods has increased the importance of camels.
Camels are now exclusively used for ceremonial purposes in desert regions.

Consider the statement about the camel in desert ecosystems. Which option is correct?

The camel is poorly adapted to desert life and struggles with heat and water scarcity.
The camel is known as the 'Ship of the Desert' due to its excellent adaptations for survival in arid environments.
Camels primarily obtain water by consuming large amounts of vegetation.
Camels are small desert animals, often active during the day.