Answer:
A quarter of the sample.
Explanation:
Let the quantity at the beginning be T. If the element has a half-life of 1,000 years, it means that after 1000 years, T/2 (which represents half the initial quantity available) would have decayed, remaining T/2.
After another 1000 years (making 2000 years), T/4 (which represents have of the quantity left after the first 1000 years) would have decayed, remaining T/4.
This means that only a quarter of T would be left after 2000 years.
<span>Animals with a monogastric digestive system are able to digest and use a high percentage of the fats and proteins that they take in from their foods and therefore exhibit high levels of energy.</span>
I think the best medium is agar. It is a jelly-like substance that is obtained from algae, and is used to culture small organisms such as microorganisms and bacteria.
Hope this helps. :)
Answer:
cells make up tissues, which make up organs. organs make up organ systems which make up organisms
Explanation:
A food chain is a linear representation of the energy going through organisms while a food web shows multiple connections between the organisms.
