To use: To employ something for a given purpose. Ex. Can I use your computer? To utilize: To turn something to a practical use, such that it has a new use it may not have had originally. Ex. You can utilize this writing software to draw pictures. See this website for more info: https://www.vappingo.com/word-blog/there-is-a-difference-between-the-words-use-and-utilize-and-you-really-should-know-it/ To manipulate: To treat someone or something like a machine. If you "use" someone, you have controlled them in a way that may benefit you but reduces the other person to an object. You have "manipulated" them. "To manipulate" is a specific type of "use". Ex. She acted like she loved him but she really just wanted his money - she manipulated him. I hope this was helpful!

Internship: A temporary employment at a company or office (such as a summer internship at a firm). The tasks vary, but are usually tedious and simple work that does not require much knowledge of the work/industry. Internships are common for college students and may be paid or unpaid. The goal is usually so the intern may test to see if they like the company, the work, and to form relationships with their co-workers in the hopes that they might be offered a full-time job later. Apprenticeship: A period of work where the apprentice learns on the job, while working alongside an expert until he/she has gained enough experience to work alone. Apprenticeships are usually for trades - such as for electricians, plumbers, chefs, carpenters etc., - not for office work. On-the-job training: A short period of time when one is trained while working a long-term job. May be in an office or not (such as bus drivers).

It means to reach the limit. The word "max" is short for "maximum" (the greatest amount possible), so to max out means to reach the maximum. If you say "I was maxed out" it could mean you were exhausted and couldn't do anything more that day (depending on the context). For example: After waking up early and driving 10 hours, I was maxed out and went straight to bed.

Your sentence is really good! Any English speaker would understand you perfectly. To make it slightly more natural, I think I would say: Ecotourism has great potential to INCREASE THE participation OF different age groups.

Yes, I agree those two sentences are perfect and have the same meaning.

To me it sounds like one person says, "It's impossible." And someone else says "It's not impossible, man, it's right in front of your face!" Hope it helps!

Does it taste good? => This is used only to ask about how delicious the food is. Is it in good taste? => This is used to ask if the choice of style is appropriate to the situation, or just pleasing overall. For example, you can say "He has good taste in music" (which would mean you like the same music he does), or "Her makeup was tasteful" (which would mean it was appropriate and not overdone), or "The joke was not in good taste" (which would mean it was inappropriate and not funny), etc. I hope this was helpful!

No, it isn't the same as "always". It is closer to the meaning of "once" or "at least once". For example, "Have you ever been to Washington?" is like saying "Have you been to Washington at least once?" ["Alguna vez has estado en Washington?"]. Please note that saying "at least once" in this sentence does not sound very natural in English - I am just using it to convey the meaning. I hope this is helpful!