Imagine that you were an ecologist need to estimate the number of spiders in Abeling 500 m² of a rainforest please explain the procedure you would follow to get your estimate including hypothetical data

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.

Convert .347 kilometers to miles show your work