Most fertilizers contain ammonia (nh3). ammonia forms when hydrogen reacts with nitrogen. which equation correctly represents the chemical reaction that forms ammonia? a. 3h2 + n2 → nh3 b. h2 + n2 → 2nh3 c. h2 + n2 → nh3 d. 3h2 + n2 → 2nh3

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Why is carbon the backbone of liveing things

Trees with light brown bark dominate an ecosystem the ecosystem has populations of insects that thrive on the tree bark over time some insect species developed certain physical characteristics that them thrive on the tree bark these physical characteristics also the insects defend themselves from predators which insect species is probaly the species with the new physical characteristics?