All of the food that we eat, liquids that we drink and medications that we take are O chemicals.
O vitamins.
O proteins.
O nucleic acids.
O carbohydrates.
HURRY PLEASE

sure what is it? ^w^

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

did anyone actually do this? like if anyone has submitted this i rly need .

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.