Is making salt water a physical or chemical

Q82. Liquid petrol does not ignite spontaneously when exposed to the air because

Within temperatures allowable for growth, higher temperatures usually lead to Choose one: A. The effect depends on the species. B. no effect on growth rates. C. higher growth rates. D. slower growth rates.

How did the planets form? Question 12 options: Gravity pulled small bits of rock and dust together to form a larger mass The planets were instantly created during the big bang Large stars had gravity and brought matter together None of these answers

A system is a group of related parts with specific roles that work together to achieve an observed result. Seeds, soil, a plow, and a large field are parts of what type of system? A. an agricultural system B. an organ system C. a legal system D.

Over the past 150 years, how has fossil fuel consumption affected the carbon dioxide concentrations in the atmosphere?

Which elements did curies discover

What hypothesis can you draw about penicillin

A burning mtch and a bonfire may have the same temperature, yet you would not sit around a burning match on a fall evening to stay warm, why not?

The average depth of the ocean is 3730m. The marianas trench is 11033m deep. How many times deeper is the marinas trench in the average depth of the ocean

Why are carbon sinks important? Animals would not get the carbon they needed without carbon sinks. Carbon sinks increase atmospheric carbon levels and keeps the planet habitable. Plants would not get the carbon they needed without carbon sinks.