Artia, spetum, ventricles, valves
Answer:
Fossils can be described as the prints of dead animals or plants in sediments. It can take millions of years for a fossil to be formed.
The conditions required for a fossil to form are :
An organism should be buried rapidly after death.
The organisms should not be subjected to the natural process of decay. It should be buried in an ample amount of sediments.
It should be buried in water that is enhanced in minerals.
There are more chances for a fossil to be formed if an organism dies in water and is buried in sediments or muds.
The ovules becomes a seed, the outer part of it is a seed coat
I think the independent variable is the temperature, while the dependent variable is the size of the balloon. The factor that is held constant is the amount of air in the balloon. An identical balloon kept at the original temperature. Independent variable in an experiment is the variable that the experiment plans to change while the dependent variable is the variable whose value depends on the independent variable.
