Why is the world's loss of biodiversity a source of concern? O a. Humans depend upon other organisms for food and oxygen

b. Species have value to humans, both monetary and because we like them

c. Tourism depends on the preservation of certain animal species

d. Both (a) and (b)

The study of the environment is called ecology.

The correct answer is A.

The loss of animals and plants in the ecosystem is called loss of biodiversity. These reasons for the loss is as follows:-

The loss of these species has a high impact on the ecosystem as these have an important function to form forests.

All the species are dependent on each other.

Hence, the correct option is A that is humans depend upon other organisms for food and oxygen

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a) Humans depend upon other organisms for food and oxygen

Explanation:

Biodiversity refers to the richness in the species of organisms on Earth i.e the variety of biological organisms on the Earth. The importance of biodiversity cannot be overemphasized because of our dependence on the sustainability of biodiversity in our ecosystems.

The loss of biodiversity, which is becoming rampant by the day, is a major concern to us because we humans depend upon other organisms for food and oxygen. Humans are strictly heterotrophic and hence are reliant on variety of organisms for food. Plants also release oxygen gas via their photosynthetic process, which is key to our survival as a population.

the answer is d.) homologous; have mammary glands