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

For more information, refer to the link:-

link

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.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.