<h2>Answer 1 with Explanation </h2>
To “lead up” means to approach to something. This term can be used when someone proceeds to cause something else. It can also be used for an event, point, sequence or actions, they happen one after another in a way that makes it possible for the event to happen. If a series of events or a period of time leads up to an event, it comes before it or causes it.
<h2>Answer 2 with Explanation</h2>
This leader can be characterized to be able to delegate and should have a positive attitude towards the circumstances. The leader should also have a sense of humor and confidence to conduct further. Creativity or innovation is also an important role to play as this can help in many cases to plan for something. Enthusiasm for the mission or a certain project will get others excited because they can see the dedication and commitment.
Answer:
Virus
Explanation:
Viruses are even smaller than bacteria and require living hosts — such as people, plants or animals — to multiply. Otherwise, they can't survive. When a virus enters your body, it invades some of your cells and takes over the cell machinery, redirecting it to produce the virus.
The atmosphere is made out of 78% of nitrogen and 21% of oxygen with 1% of other gases (Carbon dioxide, Argon,and Helium)
Particulate Matter or PM should be your answer.