Answer: The nucleus is a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral. Protons and neutrons are in turn made up of particles called quarks. The chemical element of an atom is determined by the number of protons, or the atomic number, Z, of the nucleus.
Explanation: big brain
Answer: 1800 centimeters is the largest measurement
Explanation:
1800 cm = 0.018 km
2.1 m = 0.0021 km
0.0017 km is the smallest
Answer:
Photosynthesis is an endothermic reaction because sunlight energy is absorbed during the process of photosynthesis by the plants. And our definition says that when in a reaction heat is absorbed it is termed as endothermic reaction.
The correct answer is B. All species share a common ancestor and that change occurs through time.
We can see this because the diagram start at one point (the common ancestor) and spreads out in different ways (changes throughout time).
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