B. Because a physical reaction is a change that can be seen. This particular situation is happening over a period of time, it isn’t something that happens instantly. Also I it would have been a chemical reaction, it would have mentioned something about the state of an element or the temperature or something along those lines.
The renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla.
Yes, I believe they are. If you are talking about us humans finding fossils then no. There are many fossils, bones and other interesting things still to be found
The key point in a climax community is a population in equilibrium, or balance, with respect to both biotic and abiotic factors. The second answer choice would best describe such a community.
The other choices contain words that suggest a state of disequilibrium (“growing,” “booming population,” “decreasing population”).
Scorpion does not belong to the group. Scorpions are part of
the class, arachnid. The Crayfish, the crabs and lobsters are part of the class
crustaceans. Crustaceans have five legs are normally found in the water.
Scorpions are terrestrial and are often found on land
