Probiotics and antibiotics are two opposite things; why would you assume they are both good or bad?

Probiotics are meant to stimulate the bacteria in your gut, which are already present, so making them more active isn’t a huge risk. Antibiotics kill bacteria throughout your body, including in your gut. Your gut bacteria are very helpful in you digestion of food, so you should avoid killing them unless you need to.

As an example, it’s better to give your employees a bonus rather than fire a bunch of them. A bonus won’t hurt your employees, and therefore your business, while firing employees will definitely hurt your business.

Insulin regulates blood sugar levels. It tells cells to start pulling glucose out of the bloodstream for storage as glycogen or as fat. Insulin levels are controlled by the pancreatic system, which helps regulate blood sugar levels.

Insulin resistance is when cells are not as responsive to insulin, so blood sugar levels rise to unhealthy levels. Temporary high blood sugar isn’t a problem, but if it’s sustained, it can lead to significant health problems, like kidney damage/failure and ketoacidosis (which can then lead to heart attacks), among other, more minor symptoms.

Most commercial walkie-talkies are not encrypted in any sense; they broadcast the signal plainly, so any similar walkie-talkie can read the signal.

A cellphone is connected to a cell tower to place and maintain the call. The cell tower encodes each cellphone's connection with a specific code to keep the data separate. A phone can only interpret the data that is encoded with their specific code; they will ignore others, so as to not generate extraneous noise on the call.

Gasoline liquid evaporates very easily to gasoline vapor. Gasoline vapor is highly flammable. So if you take gasoline vapor, mix it with air, and then cause a spark, it will burst into flames. If you put that explosion into a sealed container, that burst of flame becomes an explosion. If you only partially seal the container, plugging one side with a movable piston, the explosion will push the piston outwards. If you hook up that piston to a rotating crankshaft, the motion of the piston blowing outwards from the cylinder can be used to turn the crankshaft.

If you use some mechanical or electronic systems to regularly put gasoline vapor and air into the cylinder, spark it to ignite it, and then open a vent to get rid of the combustion gases, then you can turn that gasoline liquid/vapor into steady rotational energy in the crankshaft. You can hook the crankshaft up to whatever you want; a transmission to power a car, or an alternator to generate electrical power.

Water transfers heat better/faster than ice. Also, this may seem counterintuitive, but it when water freezes, it actually gives off some energy, warming up things around it. Not enough to melt the ice back into water, but just a bit. Salt water also has a much lower freezing point than "fresh" water.

So if you salt the ice on your driveway, you're lowering the freezing point so that the salt + ice will melt back into saltwater and flow away from wherever you're putting the salt.

If you put salt on ice for a dessert, you're letting the water stay liquid at lower temperatures while the remaining ice brings the temperature down. This draws more heat from the dessert, keeping/making it cold.

Your mouth chews the food to physically break it down into smaller pieces. These go to the stomach, which uses acid to chemically break down the food into tiny molecules, making a sort of acid-nutrient soup. Your intestines neutralize the acid and begin absorbing the molecules from the "soup." The nutrients go into the blood stream, where they are provided to cells all over your body. Each cell makes its own energy through respiration; it can take a molecule of glucose (simple sugar) and break it down, step by step, into carbon dioxide and water, using some oxygen gas along the way. As it does so, it captures the energy by using those reactions to "energize" certain specific molecules; the cell is able to use these "energized" molecules to "power" other functions.

They cannot target a specific part of the body. However, if you have some sort of deficiency that shows up most prominently in a specific part of the body, then taking the multivitamin or supplement can reduce the deficiency and "heal" the affected part simply because that's the part that hurts. Same for painkillers; they dull the pain everywhere, but you only notice the effect where you were feeling pain.

Pressure is caused by the column height of fluid, but the force that the pressure exerts is omnidirectional (technically, normal to every surface, but assuming a closed, real shape, that becomes omnidirectional). At any given depth, there's no net force of pressure upwards or downwards; assuming a short object, the bottom of the object experiences the same pressure as the top, which means the net force acting on each side is equal.

Air dries out and cannot support the fish's gills, causing them to collapse. Once they collapse, they aren't contacting nearly enough air to exchange enough oxygen to keep the fish alive.

Think of how seaweed or kelp in the water can use its buoyancy to stretch itself out, but once out of water, it's just collapses into a heap.

Laptops generally have pre-installed power management software that can throttle performance to ensure good battery life. If you haven't changed any settings, the default will usually reduce performance any time it's on purely battery power, regardless of charge. The assumption being that, as a laptop, it's more useful to have 6 hours of operation at 50% performance than 2-3 hours at 100% performance. It can always take more time to get something done, but once the battery is low, you can't do anything.

However, if you're connected to an external power source, the laptop will generally assume that power is plentiful, so it will give you 100% performance as long as it can also charge the battery as it does so.

I don't think "fresh water" ice is made from salt water. The glaciers, which are the source of most of the icebergs and ice floes, are made from snow that is compacted down into ice over a long period of low temperatures and additional snowfall on top. The evaporation of salt water produces fresh water, which then falls as rain or snow.

We have limited resources, so we can’t look at everything in detail all the time. We have to prioritize how we are looking for life, and we only have one example of where life can be found: Earth. So we look for Earth-like planets because we have positive-proof that life can exist there.

Imagine you were looking for a doctor in a hospital; you’d probably look for someone wearing a white coat with a stethoscope hanging from their neck, right? But anyone in the hospital could be a doctor; the guy wearing skinny jeans and a sweater walking through the lobby could be a doctor coming on/off their shift. But we know that white coat + stethoscope = doctor, so we immediately look for those signs first.

The robot might be, but the human has to verify it. How do you confirm that it’s accurate/precise aside from having a person check it? The robot will do exactly as it’s told, but that doesn’t mean it’s right, just that it’s obedient.

It doesn’t mean the energy itself is renewable, only that the sources aren’t spent when using them to make energy. The sun doesn’t burn out faster when we use solar power, the wind won’t stop blowing when we use wind turbines, and the rain won’t stop falling when we use hydroelectric or tidal power. This is contrasted with fossil fuels like oil, coal, and natural gas, which get burnt up to make energy and cannot be reused.

Try it to find out.

You're trying to solve 51 x 52 = ?

You can break it up into pieces, which it seems like you're trying to do.

51 = 50 + 1 and 52 = 50 + 2

So now you have (50 + 1) x (50 + 2)

There is the distributive property of multiplication, which says that you can "split" the multiplication of a sum into the sum of the products. In other words:

3 x 7
3 x (2 + 5)
(3 x 2) + (3 x 5)
6 + 15 = 21

So you can do the same thing here by distributing each term in the equation (50 + 1) x (50 + 2), using FOIL:

First term of each: 50 x 50

Outside terms: 50 x 2

Inside terms: 1 x 50

Last terms of each: 1 x 2

Now you have (50 x 50) + (50 x 2) + (1 x 50) + (1 x 2). Do the individual multiplications, and you get 2500 + 100 + 50 + 2 = 2652