The noun clause is "who made the initial discovery"? this is the direct object (answer d!) of the sentence: it's the object of the verb "know": you know what? you know who made the initial discovery
Hello there! I think the answer is B
Answer:
Lack of food i.e nectar is the main reason behind reduction of population of the pollinator
Explanation:
Pollinators helps the flowering plants in pollinating and transport. Species such as butterflies, flies and moths are considered as pollinator which transport pollen grains from one place to other and also feed on the nectar of the flowers. Nectar is the major food source of these pollinator. Their population is reducing because of critically low nectar supplies
The answer is A. I hope this helped and have a good day!