Neutrons are the subatomic particle that remain neutral.
The adaptations should one expect of the seed coats of angiosperm species whose seeds are dispersed by frugivorous (fruit-eating) animals, as opposed to angiosperm species whose seeds are dispersed by other means are:
- (A) The seed coat, upon its complete digestion, should provide vitamins or nutrients to animals.
- (D) The seed coat should be able to withstand high acidity, and the seed coat should be resistant to the animal's digestive enzymes.
<h3>What are angiosperm species ?</h3>
Angiosperms serves as those plants that produce flowers and they have ability to bear their seeds in fruits.
These species are the largest and can be described as the diverse group within the kingdom Plantae.
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Inside the egg are a series of fluid-filled membranes which permit the embryo to survive,the amnion allantois yolk sac, and chorion. Surrounding and protecting the embryo is the amnion, filled with amniotic fluid and providing the embryo with a stable fluid environment.
Answer:
eukaryotic cells
Explanation:
Eukaryotes are organisms whose cells have a nucleus enclosed within membranes. Prokaryotic cells do not have a nucleus
For radioactive materials with short half-lives, you use a very sensitive calibrated detector to measure how many counts per second it is producing. Then using the exact same set up you do the same at a latter time. You use the two readings and the time between them to determine the half-life. You don’t have to wait exactly a half-life, you can do the math with any significant time difference. Also, you don’t need to know the absolute radioactivity, as long as the set up is the same you only need to know fraction by which it changed.
For radioactive materials with long half-lives that won’t work. Instead you approach the problem differently. You precisely measure the mass of a very pure sample of the radioactive material. You can use that to calculate the number of atoms in the sample. Then you put the sample in a counter that is calibrated to determine the absolute number of disintegrations happening in a given time. Now you know how many of them are disintegrating every second. You use the following equations:
Decays per Second = (Number of Atoms) x (Decay Constant)
Half-life = (Natural Log of 2) / (Decay Constant)
And you can calculate the half-life
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