Answer:
. Immune system functioning decreases slightly during the first stage, increases during the , second, and then decreases more significantly during the third stage.
Explanation:
At the initial stage the body system is in shock, there will be fear especially in the case of sudden occurrence or happening this will makes
the immune system decrease in function,
but after a while there will be a response, in case of fear an hormone is released called cortisol to calm such an individual and give a balance to the system this will then increase the function of the immune system but when fear an anxiety gets to a peak and the immune system couldn't response such as individual could collapse leading to a relapse in the immune system and a decrease in function.
Answer:
bar graph
Explanation:
because it will show the amount of the two variables.
Answer:
A sea sponge 760 million years old
Explanation:
It's unclear exactly how long sea sponges have been around, but they are at least old enough to be the longest-existing creatures on Earth, outside the realm of microorganisms (like bactery). The oldest evidence of a sea sponge found was a fossil discovered just last year in a 760-million-year-old rock. This beat the previous record for oldest sponge fossil, a 635-milloon-year-old sponge discovered in 2009. There may be still older fossils yet to find. But finding an older species is unlikely,as these simple organisms appear to be the progenitors of much more complicated life, including the first multicellular animals.
Answer:
E) a natural mutagen.
Explanation:
Aflatoxin is a toxin byproduct produced by the fungi especially Aspergillus molds which grows attached to the roots of various crops like the peanuts, wheat and many others.
The aflatoxin is considered a carcinogen and a mutagen as it causes certain changes in the structure of DNA. The aflatoxin mainly affects the liver and causes a mutation in the genes of the liver and since the aflatoxin is produced naturally by the molds, therefore, is considered a natural mutagen.
Thus, option-E is correct.