Answer:
Hernando de Soto discovered the Mississippi River.
Explanation:
- In 1539 Hernando de Soto and five hundred adventurers began on a journey of exploration that would take 4 years and would travel through 10 states in the southeast United States. His goal was to discover a source of wealth, preferably gold, and around his mines establish a settlement.
- Hernando de Soto and his expedition became the first Europeans to see and cross the mighty Mississippi River.
Answer:
The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion. ... The CMB represents the heat left over from the Big Bang.
Answer;
Chlorophyll
Chlorophyll is the green pigment found in plants traps energy from the sun for photosynthesis.
Explanation;
-Green plants requires food for their day to day activities, thus they use the process of photosynthesis to make their own food, which they use to generate energy or store for the future use in form of starch.
-Chlorophyll a pigment that gives plants their green color is vital during the process of photosynthesis. During the first phase of photosynthesis light dependent stage), chlorophyll traps sunlight which is used to split up water molecules to oxygen atoms and hydrogen ions, a process called photolysis.
W=14700Nm
<u>Explanation:</u>
Work done is calculated by multiplying external force acting on the object by the amount of movement of an object.
Here an External Force of 700 N is acting or applied on an object which moves the objects to 21 m from its initial position.
the formula for work done is W=F*d
where F is External Force acting on the object.
and d is the amount of distance moved by the object.
W=700*21
W=14700 Nm