"Bears eat everything."
Translation:Медведи едят всё.
Yes, go here and expand the section that says 'conjugations': https://en.wiktionary.org/w/index.php?title=есть&oldid=36585563
Sentence order almost always makes a difference. People seem to say that Russian has free word order, but it doesn't seem very different to how flexible English can be. If you're not simply emphasizing a certain point, you may wind up sounding poetic, like Yoda, or like you're from the year 1600 if you use certain orders. If you are a US English speaker in high school or beyond, think of the SAT English portion where you choose the sentences that best convey the intended meanings. Duolingo is choosing those sentences. That doesn't mean the others are wrong.
The difference here is that with едат last, you are saying - Bears EAT everything. I can only imagine this making a lot of sense if you were saying something like - Bears DESTROY everything and bears EAT everything so be careful in the wilderness to keep your camp safe from bears.
I'm sure you have already discovered this in your studies by now, but I hope this helps new learners like myself. I'm just another English speaker who loves language and wants to eventually be amazing at Russian.
For Russian->English exercises try listening to the sentences before you ever read them and pick out as many words as you can. Do this for every sentence, but probably not more than once or twice per sentence otherwise you'll be in Duolingo all day. I end up having to squint a bit so I can find the play button, but won't be tempted to read the sentence.
Mouse over individual words to have the computer repeat them slowly
Attempt English->Russian exercises either in your head, or out loud, before you even start to type, select words, or pick the appropriate sentence (depending on the exact exercise).
While typing is important, try using the speech-to-text feature of your phone/computer for SOME English->Russian exercises
There are several Russian language learning youtube channels which are entirely in Russian with English or Russian subs, Natasha Speaks comes to mind
Here are 11 short stories with very slow accompanying audio http://www.russianforfree.com/texts.php
Watch more media... Masha and the Bear, and Silver Spoon (мажор?), are both on Netflix. Moskflim and Film.ua both have full length movies and TV shows on youtube. There are also a number of science shows: агрессивная среда, большой скачок, and эксперименты.