This is a human-made physical system. A) ecosystem

B) health care system

C) bicycle

D) school system

the only way i would see could be an autoclicker type software. but that is very time consuming.

we can all learn from our past mistakes because we all have different ways of learning different types of techniques. my way may or may not another classmate remember and have the repetition to acknowledge such standard. such as remembering acronyms. using abbreviations to us remember keep things in order in our memory. this us figure out what comes next in the sequence. if so, what we have is a sentence of just letters all in caps. we either know the meaning or have no idea what it stands for. most of the time we know the meaning and context. but most of us who don't know, should learn by having a quick glance at what needs to be remembered. such as repetition in the memory for acronyms. one way that me, is the fact that i'm always doing math and english assignments. so we have to remember specific meanings such as soapstone for documents, such as citing correctly. or pemdas for doing the equations correctly, even if it's the super long way. this works for everyone. you just have to find what works for you by practicing and repetition daily.

answer

true

explanation

stem(science, technology, engineering and math)   skills in every career. for example, to operate a business, you require stem skills to provide estimates to customers, prepare budgets and promote business online. the stem careers that are currently in high demand are application software developers, market research analysts, civil engineers, industrial engineers, electrical engineers, and family and general practitioners.