Dalton's atomic theory includes which idea? a. all atoms of all elements are the same size. b. atoms of the same element are always identical. c. individual atoms can be seen with a microscope. d. atoms of different elements always combine in one-to-one ratios.

The correct answer is B. Atoms of the same element are always identical.

Explanation:

John Dalton was an English chemist mainly known for proposing the atomic theory during the 18th century, in this theory Dalton proposed multiple laws related to the atoms, which are the smallest units of matter and they way these behave including that the mass of the elements remains constant through the chemical reactions and that each element is composed by atoms with identical features which means atoms of different elements are different and can not be changed but only combined using different ratios or proportions. Considering this, it can be concluded Dalton's atomic theory included the idea that atoms of the same element are always identical.

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plan to start slowly and boost your activity level gradually unless you are already exercising frequently and vigorously.

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listen to your body. hold off on exercise when you're sick or feeling very fatigued. cut back if you cannot finish an exercise session, feel faint after exercise or fatigued during the day, or suffer persistent aches and pains in joints after exercising.

if you stop exercising for a while, drop back to a lower level of exercise initially. if you're doing strength training, for example, lift lighter weights or do fewer reps or sets.

for most people, simply drinking plenty of water is sufficient. but if you're working out especially hard or doing a marathon or triathlon, choose drinks that replace fluids plus essential electrolytes.

choose clothes and shoes designed for your type of exercise. replace shoes every six months as cushioning wears out.

for strength training, good form is essential. initially use no weight, or very light weights, when learning the exercises. never sacrifice good form by hurrying to finish reps or sets, or struggling to lift heavier weights.

exercising vigorously in hot, humid conditions can lead to serious overheating and dehydration. slow your pace when the temperature rises above 70°f. on days when the thermometer is expected to reach 80°f, exercise during cooler morning or evening hours or at an air-conditioned gym. watch for signs of overheating, such as headache, dizziness, nausea, faintness, cramps, or palpitations.

dress properly for cold-weather workouts to avoid hypothermia. depending on the temperature, wear layers you can peel off as you warm up. don't forget gloves.

honestly you should get that checked out because it really isn't normal