D is the right answer for this question on e2020
Watson and Crick described it well in their published work on DNA and its structure. ... This understanding of the structure of DNA is particularly important because it led to the realisation that if there is an adenine on one side of the pair, then the other base must be thymine.
The reason why people might worry about introducing new species in Albany is the same reason people might be worried to introduce a new species everywhere: it can replace the local species, thus it would be a thread to the biodiversity on Earth.
For example, seeds could fly away from the roof and the plant would start growing on the field nearby.
Answer: died
Explanation: Simon was dead, and Jack had died. 'Was' is a past continuous tense word showing an action that had been performed moments, seconds, minutes or even years ago, and that action or event will continue to be in the past. 'Had' on the other hand is showing an event that just occured recently. Simon might have died 2 days ago and Jack's death might have come seconds ago.
The most abundant gas in the Earth’s atmosphere is nitrogen.