What enables the survival of a species

Depending on the animal type some animals have instincts that have from birth (such as a deer knowing how to walk right after being born), and some learn  their survival skills as they grow and develop (such as a bird learning how to fly after a while of growing).

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.