Bacteria have been the very first organisms to live on earth in the waters of the first oceans. At first, there were only anaerobic heterotrophic bacteria.
Physcial weathering <span>is the process that breaks rocks apart. So, I suppose when an earthworms digs and tunnels their way through the soil? They move the broken peices of rock causing it to break into smaller peices.</span>
The answer is 1.) True.
Pollen tube used to transport pollen from the stigma of a flower to the ovary. Actually, it begins to grow when lands on the stigma. It grows until it reaches an ovule which is inside the ovary. This way it is secured that a nucleus of pollen will fuse with a nucleus of the ovule and that fertilization will occur.
The planarian has a soft, flat, wedge shaped body and both ends of the body are different
