What percent of potassium-40 remains undecayed in a rock that is 3.9 billion years old? The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
Answer:
they are covered by fruit.
Explanation:
since angiosperm means covered seeds, they usually refer to the seeds that have a outer cover thats helps to protect them like fruit
extra info:
gymnosperms are known as naked seeds and they usually refer to the pines present on trees
im sorry if this wasnt any help..i tried my best
Answer:
It would be=
14 protons -
17 electrons=
-3 :D
When you subtract protons from electrons, you get the electrical charge.
Explanation:
If this is wrong please report/dislike!! much love <33 | have a nice day!!
<span>I answered another question like this, I think the order goes weathering, erosion, deposition, compaction, then cementation.</span>
Answer :
Perform Heimlich maneuver
