Answer:
D. organ systems
Explanation:
Organs and tissues that perform the same function are called organ systems
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
Answer:
Trace fossils include footprints, trails, burrows, feeding marks, and resting marks.
Explanation:
Answer:
north pole area
Explanation:
1. The north pole (very northern canada greenland and russia) is a big part of the world, but it's growing smaller
2. It's all mostly ice, so barely any trees
3. SUPER cold there, so it doesn't get warmer than 50 f or 10 c
5. The north pole area's ocean is called the Arctic Ocean
6. the aurora lights, or the Northern lights happen there too.
Answer:
mitochondrion energy production from the oxidation of glucose substances and the release of adenosine triphosphate
nucleus DNA maintenance, controls all activities of the cell, RNA transcription
vacuole storage, transportation, helps maintain homeostasis
Explanation:
