Answer:
Many tree seedlings crowd the open space and attempt to grow in the sunlight.
Alpha particles are released by proton rich unstable nuclei. It has no electrons to balance the protons making it positively charged particles moving at very high speeds. Gamma articles are electromagnetic waves of short wavelength and high frequency. It has a speed same as the speed of light. Beta particles are released by neutron rich unstable nuclei. It has a speed of less than the gamma particles.
The basic unit of volume is the liter although the cubic centimeter and milliliter are also widely used as units for measuring volume.
Brainlest answer is always appreciated ( ͡ ͜ʖ ͡ )