You are presented with the question "Scraping oneself on a contaminated object may cause an invasion of the body by what?" and the following answer choices: - amoebae - bacteria - blood - dogs - disease - horses - toxins - fish Now knowing that scraping oneself on a contaminated object may cause infection and an infection is an invasion of the body by bacteria, choose the best answer.
bacteria
(Question)
You are presented with the question "What can release mercury into the atmosphere? " and the following answer choices: - smoking tobacco - hydrogen and oxygen - flow of electrons - cigarettes - chemical reaction - an engine - generating heat - one celled organisms Now knowing that coal is used for generating heat by burning and coal releases mercury when it is burned, choose the best answer.
(Answer)
generating heat
Ques: You are presented with the question "what has a negative impact on the environment?" and the following answer choices: - deforestation - deserts - cigarettes - desertification - humans disturb it - environments - weather - harmful substances Now knowing that erosion of soil has a negative impact on the environment and desertification implies soil erosion, choose the best answer.
Ans: desertification
(Q).
You are presented with the question "amphibians are the first true what with four limbs?" and the following answer choices: - members of their own species - to move people - warm-blooded - Due to their feet - animals with backbones - remains of prehistoric life - Something to move - Generating heat Now knowing that amphibians are the first true tetrapods, or vertebrates with four limbs and animals with backbones are called vertebrates, choose the best answer.
(A).
animals with backbones
Ques:You are presented with the question "What relies on a narrow pH range?" and the following answer choices: - trees - potatoes - a fish - cacti - pine - plants - Oak - bacteria Now knowing that all life relies on a relatively narrow range of pH, or acidity and plant life has increased, choose the best answer.

Ans:plants
Question: You are presented with the question "In photosynthesis, plants convert solar energy, carbon dioxide, and water into what?" and the following answer choices: - Organic compounds - water - leaves - chlorofluorocarbons - carbohydrates - solar power - peachleaf willow - chemical messengers Now knowing that photosynthesis means producers convert from carbon dioxide, water, and solar energy into carbohydrates for themselves and fish are the consumers, and plants are the producers, choose the best answer.
Answer:
carbohydrates