Pits are large and allow movement of large molecules through tracheids.
true or false ?

salt ions are smaller than bacteria
true or false?

Astudent observes a star from two positions of earth in its orbit, in summer and winter, and measures the change in the position of the star. which of these can be best calculated by this method?

Identify characteristics of energy from the sun. check all that apply. almost all of the energy on earth comes from the sun. energy from the sun is known as mechanical energy. the energy in fossil fuels originally came from the sun. plants convert the energy of sunlight into chemical energy.

What processes take place before the mature mrna exits the nucleus?