Which of the following questions can be answered by science? What is the composition of air? Should the driving age be reduced? What is the purpose of our existence on Earth? Should students be allowed to bring toys to school?

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

If two objects at different te, peraure are in contact with each other what happens to their temperature

What is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5hz a 250 m b 0.1 m c 10m d 0.01 m