1) Students are taught how to use effective measures to kill parasites. 2) The most problematic environmental concerns deal with production and pollution. 3) Everyone must do everything in their power to preserve nature, as it is very important to his everything. 4) The ribs are arranged in pairs in the thoracic vertebrae, which correspond to the number of ribs.
1) Students are taught how to use effective measures to kill parasites.
2) The most problematic environmental concerns deal with production and pollution.
3) Everyone must do everything in their power to preserve nature, as it is very important to his everything.
4) The ribs are arranged in pairs in the thoracic vertebrae, which correspond to the number of ribs.