There are two different answers, 1, water wears away the rock slowly over time, allowing you to see the levels odsilt, sediment, ash, Ect, over time, it's a time machine.
a river is also a natural rock tumbler, it breaks, polishes and carries minerals down stream.
Answer:
The answer is 5.1852 cm/yr
.
Explanation:
In order to calculate the full seafloor spreading rate in cm/yr, we have to first calculate the half-spreading rate which can be done by simply dividing the given distance (in cm) by time (yr); after calculating the half-spreading rate, we will double it and get the full seafloor spreading rate, thus:
Distance = 3,500 km = 3,500 × 100,000 cm = 350,000,000 cm
Time = 135,000,000 years
The half-spreading rate = distance ÷ time = 350,000,000 ÷ 135,000,000 = 2.5926 cm/yr
.
Therefore, the full seafloor spreading rate = 2.5926 cm/yr × 2 = 5.1852 cm/yr.
Answer: B. Metamorphic rocks
Explanation: Metamorphic rocks are those that have undergone changes due to extreme heat and pressure. Thus, the rock, from which it becomes a metamorphic rock, is heated at temperatures above 150-200 ° and exposed to a pressure of 1500 bar. In this way, the structure of the rock is changed, in terms of the arrangement of the atoms, and the result is a change of physical and chemical properties. There are two basic types of metamorphic rocks: foliated and slate. Generally, some of the metamorphic rocks are anthracite, schist, quartzite, marble, etc.
The continent that had the most malnourished children in this time frame was Africa. The biggest part of the continent was in very bad economical state, civil wars and genocides were raging, lots of the existential goods were not available for the people, that contributed to big portion of the children to be malnourished, that contributed to very high percentage of death among the youngest population.
the further away you are from the sun, the more oval shaped you get. the closer you are, the more circular the orbit gets.
