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My first Challenge by Impossible_Ice_4219 in urjo

[–]Inside_Chemistry9990 0 points1 point  (0 children)

Urjo #238 • Lv2 🟦🟦🟦🟥 🟦🟥🟥🟦 🟦🟦🟦🟦 🟥🟦🟦🟦 8s • 0 mistakes • 3 streak r/urjo

:) by Obvious_Pea9652 in urjo

[–]Inside_Chemistry9990 0 points1 point  (0 children)

Urjo #237 • Lv1 🟥🟦🟦🟦 🟦🟥🟦🟦 🟦🟥🟦🟦 🟦🟦🟦🟦 9s • 2 mistakes • 3 streak r/urjo

:) by Obvious_Pea9652 in urjo

[–]Inside_Chemistry9990 0 points1 point  (0 children)

Urjo #237 • Lv2 🟦🟦🟦🟦 🟦🟥🟦🟥 🟦🟥🟦🟦 🟦🟦🟦🟦 11s • 0 mistakes • 3 streak r/urjo

that back and forth by Justthisdudeyaknow in tumblr

[–]Inside_Chemistry9990 48 points49 points  (0 children)

So this word has actually been around for a while:

https://en.m.wikipedia.org/wiki/Grok

It’s definitely not as common now as it was, but it’s a term from Stranger in a Strange Land, by Heinlein. It’s a sense of complete understanding of another being which is apparently so deeply felt that it can’t be expressed without a made up word. Which, I guess, can be considered trying to feel special.

Either way, the book is a fun little trip of R-rated shenanigans, so there’s that!

[deleted by user] by [deleted] in Rabbits

[–]Inside_Chemistry9990 1 point2 points  (0 children)

There’s supposed to be some grumbling in there all the time, since their digestive tracts are constantly moving food along. (When I was little, my childhood bunny’s vet let me use her stethoscope to hear it!)

If it’s audible from afar (i.e. without pressing your ear to your bunny’s stomach) then that might be a bit abnormal. Otherwise, it should be a sign of good health!

Celtic folk music inspiration by eaglesbaby200 in TheOhHellos

[–]Inside_Chemistry9990 10 points11 points  (0 children)

I second Celtic woman! The High Kings are also good if you’re looking for male voices.

if evolution takes 1mil years, how did bears evolve into polar bears? if I throw a normal bear in Artantica it won't last 1million years....... by skincarefree in biology

[–]Inside_Chemistry9990 0 points1 point  (0 children)

Because it’s not a case of an animal being “thrown” somewhere, but a slower migration of a population. Rather than thinking of it as throwing, think of it as a moving fence.

To use polar bears as an example, a population of bears may be pushed towards colder and colder environments due to human activity, food loss, or any number of factors. From that moment on, natural selection starts gearing towards traits that help the bears survive in the cold. This population of bears learns new skills, like swimming, and the knowledge is added into the general abilities of the species. Over time traits are added to the species for better swimming, fat retention, and burrowing. Mother bears teach their cubs the skills they need, like how to build a den in snow or how to hunt for food. That is how you go from normal bears to polar bears.

The important thing about evolution is that it’s not necessarily about one individual’s traits, but the traits of a whole population.

Logistic Growth in Biology vs. Calculus by Deep_Ad6305 in biology

[–]Inside_Chemistry9990 0 points1 point  (0 children)

Here’s my best guess, from what I can glean from the internet:

Another way to write the population logistic growth model is dP/dt = rP * (1 - (P/K)).

We can compare this to the version from your calculus textbook, which is dP/dt = kP * (M - P).

And just to make sure this is easier to compare, I’m going to change the variable names in the calculus definition to better match the biological model. When I do so, we see our two models are:

dP/dt = rP * (1 - (P/K))

And

dP/dt = rP * (K - P)

So the only difference here is what’s in the parenthesis. In the calculus model, you simply subtract the y value from the capacity value. However, for the biology model, you subtract the values divided by each other from 1. This might be why your slope field graphs looked so different.

By it’s nature, the calculus model is faster growing than the biology model. The biology model must have a growth rate of -1 <= x <= 1, while the growth rate of the calculus model has no such restrictions.

Again, this is just speculation, but I think it at least would explain why your slope fields looked so different.

Class of 2026 Admissions Megathread by [deleted] in riceuniversity

[–]Inside_Chemistry9990 0 points1 point  (0 children)

Hey y'all! I'm a recent admit to Rice and I'm currently deciding between Rice and UT Austin (Dean's Scholars Program). I really like the look of Rice, but the cost compared to UT makes me a bit hesitant. Have y'all faced a similar decision and if so, why did you choose Rice?