Affiliate Marketing Secrets

According to the competitive exclusion principle, two species cannot continue to occupy the same
1. territory
2. niche
3. community
4. population
5. habitat

I just need these two questions that I can’t find anywhere.
DOWN
1. Principle proposed by Darwin that suggests that ALL species- living and extinct- were derived from a common ancestor (2 words)
5. Principle proposed by Darwin that suggests that species look different than their ancestors as they adapt to live in different habitats and establish different niches (3 words)

A} a niche can be shared by two species if their niche are very similar
B} niche subdivision may occur
C} one species will eliminate a competing species if their niches are very similar
D} competition ends in worlwilde elimination of a species

I am currently drafting a business plan for an online brokerage firm that fills a niche. Neither my partner nor I have any investment certifications or experience (we will hire the necessary people); however, from my research I see that in order to be a broker, you must have a Series 7 certification. My question is who within an online brokerage firm is required to hold such a certification, at the minimum?
1) Nobody since computers will be doing the investing and not people.
2) At least one of the principle founders/partners.
3) At least one of the hired executives or managers.
4) Anyone within the organization regardless of their position.
5) The company itself can acquire a Series 7 certification irrespective of the people within the organization.

A.habitat.
B.niche.
C.territory.
D.range.
E.biome.

I am doing my biology lab. my lab is about Ecological Niche. bacteria is our model organism. we set temperature and PH as the “space” or niche. finally I get a graph PH vs temperature. part of organism’s environment actually is same. so, I think my results doesn’t prove Gause’s principle. however, I am not sure about my conclusion.