Answer:
erosion and a, weatheri g and b
Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.
<span>DNA is the blueprint of the body. It contains all the instructions for putting the body together, this information is needed to make protein by encoding instructions for putting amino acids together.</span>
It implies that energy can neither be created nor destroyed, but can be change from one form to another. The law of conservation of mass states that the total amount of mass remains constant in an isolated system in spite of any physical or chemical changes that may take place.
Answer:
The Pathfinder was designed primarily to demonstrate a low-cost way of delivering a set of science instruments and a free-ranging rover to the surface of the Red Planet. Pathfinders demonstrated a number of innovative, economical, and highly effective approaches to spacecraft and mission design. Info gathered by a Pathfinder included engineering data on the new technologies, and analysis of the Martian atmosphere, climate, geology, and the composition of its rocks and soil.
Explanation:
https://mars.nasa.gov/mars-exploration/missions/pathfinder/
