Correct Answer : All of the above
Teens drinking are at risk of date rape, becoming an alcoholic, HIV and other STDs. Drinking also creates a higher risk for depression, anxiety, and low self-esteem. Drinking during puberty can also change hormones in the body. This can disrupt growth and puberty. Too much alcohol at one time can cause serious injury or death from alcohol poisoning.
Correct Answer : Constructing dials
Horography (Horology) the art of constructing time-keeping instruments such as watches and clocks.
Correct Answer : Number of times you exercise per week
Frequency, as it applies to exercise, refers to how many times a week you do cardio and strength training workouts. It is one component of the basic F.I.T.T. principles that guide us in creating and changing workout programs. The FITT principles include frequency, intensity, type, and time.
Correct Answer : Compound
A microscope is an instrument that magnifies objects. Cells that were first observed by Robert Hooke in the year 1665 in the compound microscope.
Correct Answer : The North Pole experiences 24 hours of darkness.
On December 21, the earth is in an equivalent position on the opposite points in its orbit, So the South pole is tipped towards the sun and North pole away from it resulting in 24 hours of darkness at the North pole, as the sun is overhead on the Tropic of Capricorn. This phenomenon is winter solstice; while on June 21, North pole is tipped towards the Sun but the South pole is tipped away from the sun resulting in 24 hours of darkness on the South Pole, as the sun is overhead on the Tropic of Cancer.This phenomenon is summer solstice; while Aphelion is the position of the earth in its orbit when it is at its distant point from the sun.
Correct Answer : Photosynthesis
Correct Answer : decreases
Correct Answer : Nucleus
Transcription is a process of production of mRNA which occurs in the nucleus of the cell. After transcription, translation which occurs in the cytoplasm.
Correct Answer : It absorbs all the colours
Actually a black board has all colours in light or white light . So when light falls on it board absorbs all colours because all are present so no light is reflected back . That is the case when board has all colours and so it will appear black as it absorbs all colours of light that fall on it.
