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There was a question on an invitational test about residence time that I'm confused about. On the answer key, they subtracted the output of the element from the input in order to get "net input", then divided the total amount of the element by the net input to get residence time. I thought net inpu...

Hello, Got a question, when we learn the origin and insertion, how in-depth should we know it? For example, for the insertion of pectoralis major are we supposed to know it inserts in the humerus or should we be more specific and learn that it inserts in the bicipital groove and deltoid tuberosity ...

Is it allowed to bring in a salinometer device that consists of multiple separate components/to bring in multiple devices? last year we took 3 salinometers and a glass beaker and they let it in at the regional and state. We asked as we went in and the ES said there is nothing in the rules about all...

What's the difference between Paralytic polio and spinal polio. In one website, I read spinal polio is a type of paralytic polio, and in other, i read that they aren't connected so I'm confused someone pls help polio virus is an entero virus, affecting intestine. but "About 1 percent of polio, viru...

tips from a previous water quality contestant: 1. study from the study guide/hand out from science Olympiad website. ( https://www.soinc.org/water-quality-b Water Quality Training Overview Handout Water Quality Estuary Handout Water Quality Marine Handout Water Quality Marine Chemistry Handout Water...

I probably sound dumb but what's the difference between neuromuscular junction and muscle contraction? By that I mean isn't nueromuscular junction the beginning of the contraction then the binding of myosin and actin occurs, isnt that basically the whole muscle contraction? Sorry if I sound slow......

filkuisk wrote: ↑

February 13th, 2020, 2:46 pm

Do you guys know of any good free online textbooks for Heredity?

you can study from the genetics chapter of openstax biology textbooks
https://openstax.org/details/books/biology-ap-courses
or your school will have campbell's biology, which you can borrow...

I have attached the link for the question, I feel the test writer could have been more descriptive... https://docs.google.com/document/d/1QPS-_hxQzzMKD0XF6SN2qxGnhPfIbNiiBZHOeJP__bc/edit?usp=sharing the reason for that answer just occurred to me... answer is 22 pairs, since chromosome 18 is not a "...

1a. Rocky the rock climber suffered a severe injury to his arm after a boulder hit it from above (ahh! Flying boulders!). In the hospital, doctors found that his urine was brownish-red in color. Moreover, after performing a blood test, high K+ concentrations were found. ECGs taken showed cardiac ir...

adarsh wrote: ↑

January 20th, 2020, 12:01 pm

Where do you guys study for sensible and latent heat fluxes? Having trouble finding a place with a lot of information.

i am waiting for an answer for this question as well.....
one that i found was this
http://earthguide.ucsd.edu/virtualmuseu ... 07_2.shtml