Which of the following is a difficulty associated with environmental protection? a. cost b. unpredictability c. sustainability d. all of the above

The correct answer is D. All of the above

Explanation:

Environmental protection involves preserving natural resources and trying to reduce the negative impact human activities had had over the last decades. This is necessary to avoid negative consequences such as massive extinctions and guarantee natural resources for future generations.

However, environment protection has multiple difficulties; this includes cost because plans or programs for environmental protection require infrastructure, technology, and experts on the field which implies high costs; also, environmental protection is challenging due to unpredictability as changes in societies, ecosystems or weather patterns can make plans or programs useless. Finally, one difficulty is sustainability because it is difficult to find a balance between environmental protection and the resources taken to meet human needs. Thus, all of the above (cost, unpredictability, and sustainability) are difficulties associated with environmental protection.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

your spelling is a little off : ]