Answer:
1. c. ore, 2. ore minerals or economic minerals
Explanation:
- An ore is a naturally occurring rock that contains sufficient minerals and important elements and typically metals. Ore metals are naturally found in the crust of the earth like the oxides of sulfur and silicate. Formed by a variety of geologic processes.
- <u>Crystals are a solid material thus have a fairly well-defined composition in the rocks and hence valued as a useful element by forming the internal structure of the mineral.</u>
Answer: (edited) Actually it might be D
Explanation: ATP (adenosine triphosphate) makes food for your body, and we can only keep a small amount of ATP and glucose stored in our bodies at a time. When you run, your body is trying to create extra ATP. In order to do that, you need more oxygen intake, so you start breathing heavier and quicker.
Answer: Reptiles include snakes, turtles and lizards, while amphibians include toads, frogs and salamanders. One difference between reptiles and amphibians is their relationship with water.
Explanation:
Amphibians:
- Skin is smooth and highly porous.
- The webbed feet help them to swim.
- Their eggs are covered with gel.
Reptiles:
- Skin is dry, hard and scaly.
- They have limbs to facilitate running and swimming.
- Their eggs are covered with a hard protective covering.
The Nucleus is the hub of the cell, the heart and soul of the cell. As much as a quarterback is in a football team. The Nucleus is what keeps the cell going and a cell wouldn't exist without a Nucleus. Hope this helped, have an amazing day :)
