Answer:It would take 300 years.
Explanation: Light years are how much light travels in a year. Thus it would take 300 years for light to travel to earth if a star is 300 light years away.
A basic experiment involves a minimum of two participant groups. The two participants are the experimental group and the control group. An experimental group receives the variable being tested, and one variable is tested at a time. The experimental group is compared to a control group, which does not receive the test variable.
Hi lovely! Here are your scientific questions that are testable:
Does the type of liquid affect how fast an ice cube melts?
Does changing the temperature of water affect the buoyancy of an egg?
Does the thickness of the wire affect the power of the circuit?
Hope I helped!
Answer:
In the Cretaceous period, Mesozoic Era forests begin to look like modern day forests and included a variety of conifers and decidous trees.
Explanation:
The Cretaceous period was the last and longest segment of the Mesozoic Era.It lasted approximated 79 million years from the minor extinction events that closed the Jurassic Period about 145.5 million years ago to the Cretaceous - Palogene ( K-Pg) extinction event dated at 65.5 million years ago. This era have seen more dinosaurs than before.The horned Cretaceous dinosaurs appeared, like the Triceratops and Centrosaurus. The armored Ankylosaurus, duckbilled Parasaurolophus, and large carnivore Tyrannosaurus were a few of the quickly evolving dinosaurs.
Stem cells can be developed into a required tissue because of their ability to differentiate into any tissue. ... The process by which unspecialized stem cells become specialized is called differentiation. Differentiation involves many stages and at each stage the cells becomes more specialized