Helium can escape it's the least dense element after Hydrogen
Not all birds can fly,but the birds who can fly it's because birds use there strong breast muscles to flap their wings and give them the thurst to move through the air and fly.(Pinguins can't fly)
Answer:
The giant numbers painted on the airport runways stand for the airport's name and are called a heading. The runway heading consists of two numbers between 1 and 36. This means the heading is based on the compass directions with 360 representing north, 90 – east, 180 – south, and 270 – west.
A taxiway is a path for aircraft at an airport connecting runways with aprons, hangars, terminals and other facilities. They mostly have a hard surface such as asphalt or concrete, although smaller general aviation airports sometimes use gravel or grass.Taxiways can be a combination of letters and numbers, or letters alone. They are indicated on a black sign with yellow letters or a yellow sign with black letters and arrows. A black square with yellow letters and/or numbers inside signifies the plane's position on the various taxiways.
Explanation:
According to the World Health Organization, "genetically modified organisms (GMOs) can be defined as organisms (i.e. plants, animals or microorganisms) in which the genetic material (DNA) has been changed in a way that does not occur naturally. The technology is often called 'modern biotechnology' or 'gene technology'.
