Critical thinking requires that

Answer: Here are the steps to determine the atomic mass of an element with isotopic forms:

1. Identify the isotopes: Determine the different isotopic forms of the element. Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons.

2. Determine the relative abundance: Find the relative abundance of each isotope. This information is typically given as a percentage or decimal. The relative abundance represents the proportion or percentage of each isotope in a naturally occurring sample of the element.

3. Obtain the mass of each isotope: Identify the mass of each isotope. This is usually given in atomic mass units (u) or grams per mole (g/mol).

4. Multiply the mass of each isotope by its relative abundance: Multiply the mass of each isotope by its relative abundance (expressed as a decimal). This calculates the contribution of each isotope to the overall atomic mass.

5. Sum the contributions: Add up the contributions of each isotope to obtain the atomic mass. This sum represents the weighted average of the masses of all the isotopic forms, taking into account their relative abundance.

1. Answer is d. all of the above.

Climate can be defined as the data collection of weather conditions of a long period of time in a certain area. The weather conditions that affect to the climate are temperature, precipitation, atmospheric pressure, wind and so on. Any changes in weather can change the global climate.

2. Answer is c. ozone.

Trees release oxygen and water vapor into the atmosphere but not ozone. The oxygen gas is released by trees as the by-product of photosynthesis. This is the natural way of production of oxygen gas. Water vapor can be released due to the transpiration of trees.

1. The correct answer is option D. all of the above.

Global climate change will bring changes in temperature such as heat waves, droughts, volcanic eruption, deforestation, extinction of species due to large shift in temperatures, changes in precipitation such as  heavy snowfall, ocean acidification, and ozone depletion.  

2. The correct answer is option C, ozone.  

Ozone is not released by trees into the atmosphere. Plants have chlorophyll and in the presence of sunlight plants uses sunlight and carbon dioxide to form glucose and oxygen.

6CO₂ + 6H₂O  ->  C₆H₁₂O₆ + 6O₂

During transpiration plants exhale water vapor through the stomata, tiny pores that are found on the surface of the leaves.

Thus trees never release ozone into the atmosphere.