Concretions im pretty sure because they are in a <span>spherical shape</span>
Answer:
Temperature or heat energy can affect the functioning of an enzyme
I hope this helped!!
Answer:
The answer is A) An element—An element can not be broken down chemically into a simpler substance
Think of it like this. Horses do a LOT of galloping, which is hard on the feet! Hooves are a physical ADAPTATION, so that the horses won't experience pain on their journeys. They're hard, so that the horses don't feel the ground nearly as much. Now, mountain goats travel over rough terrain, with sharp rocks and steep inclines. Again, it's really easy for them to get hurt strutting around the mountains, so they evolved hard hooves to protect their feet.
