Answer:
10
Explanation:
atomic mass is protons + neutrons
19 = 9 + neutrons
10 = neutrons
Mercury has the smallest orbit and neptune has the largest. so neptune would take a longer amount of time to orbit the sun.
When coming to building something, some materials are more vulnerable to water and can wear away easier. Some can keep the water in, so depending on the material, the water quality can be better sustained.
Answer:
A.
Explanation:
It is A because the diagram for choice A shows correctly how cellular respiration produces energy and releases carbon dioxide and water as byproducts(CO2). And it also shows how photosynthesis release or produces oxygen gas (O2)
