Pl hel its due today but i don't get it plsss help ill give brainlies Which of the following could be a characteristic of the fossil that is most closely related to humans?

S-shaped back bone
Arms longer than legs
Water-dwelling
Tree-dwelling

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?

Which of the following is a solution a- brewed coffee b-tomato juice c- ranch salad dressing d- muddy water

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction