Have two-thirds of the requirements: Usually a posting will present a long list of qualification criteria, causing job seekers to exempt themselves from consideration without trying. Generally this list is a wish list rather than a concrete "must-have" list (unless otherwise stated). Nearly no one will have every criteria. If you have about two-thirds of the list, you can still apply -- and emphasize that you are a quick learner for the criteria that you don't have.
You have more experience than you think: A common frustration of job seekers just starting out in the marketplace is that most employers are asking for a certain level of professional experience, which they don't always have. It's true; you will find few postings asking for no experience, but the requirement is not always as set in stone as you might think. You have Field Period® experience, part-time job experience, work study experience, club/organization experience. If you are an AOE student, you likely have practicum experience or a large-scale class project (or prior work experience that may seem unrelated, but may have good common skills that you can emphasize). A good rule of thumb is that unless the posting says that it's required, apply for a position that asks for 0-2 years of experience. Emphasize the transferrable skills from other prior experiences in your cover letter.
Preferable vs. required: Sometimes a posting will say that a certain qualification is "preferred." This means exactly what it implies -- that it's not a necessity to have that qualification in order to apply, just appreciated if you do. Still apply if the posting appeals to you and you do not have all/any of the preferred qualifications. You may prove yourself valuable in other ways.
Your major may still fit: Sometimes new job seekers will exempt themselves from a potential job opportunity because they think their major doesn't fit. For example, the employer may be asking for Environmental Studies. Your Environmental Science degree will likely fit, even if the wording isn't exact. A Biology major may also work, depending on position requirements. If you think you have a related degree and are able to offer most of the required skills, make a case for yourself in your cover letter.
Be careful of job scams: Fraudulent employers are targeting Gen Z job seekers more than ever, stealing personal information for identity theft, money laundering, or conning you out of money. Take a look at the ways to identify a scam at this link. Remember that you do not need to give out your SSN or accept packages from someone unknown to you -- nor should you have to pay any kind of fee for a job opportunity.
Remember that you are evaluating the employer too: For many years, new job seekers have been evaluated and graded, but it's not a one-way street. When reading through the job posting, are there things that seem unreasonable? You do not have to apply -- or if you do, you can ask about it.