When there's cytoplasm moving
images and spectra of the planet
They can be either, its hard to tell unless you plant them. If it grows it was alive, if it doesn't it is dead.
It would be better to look at living cells instead of dead cells, because living cells give you information about what you're researching, knowing you can see their movements and living organelles, which tell you absolutely nothing when they're dead.
Because an onion develops in the ground, and chloroplasts develop in the sunlight. Therefore no chloroplasts form. Think of it this way: Tree leaves contain chloroplasts because they contain chlorophyll in order for the leaves to turn colors. But who has ever heard of an onion changing colors because it's fall?! Onions dont need chloroplasts, so they dont have them.
if its not moving its obviously dead .........................Well in Bacteria you cannot tell if it's alive or dead because it takes time for cultures to grow and it has it's levels of life and death, but mostly your looking for it to spread in many directions and if any fermentation can be noticed.
no,she is NOT ALIVE. SHE is gone forever. DEAD,I TELL YOU, DEAD!
Their gills will be closed if they are alive. but if they are ripped they are dead.
tell me the answer
Nope, he's still alive. Who would tell you that he is dead?
a rock is never alive
The way to tell if a fox tail palm is truly dead is to check the stem and roots. If both are mushy and brittle, the plant is dead.
They will turn brown if dead.
if the egg is cold the egg is dead and you will hear peeping when it is going to hatch
No. as far as I can tell, he is still alive and working on a movie.
That you are dead, alive, or having a heart attack.
It gets bigger
If it is dead it will be open therefore if it is alive it will be closed. Sometimes they are open but still alive, but if you tap their shell they close it.