Answer:
True
Explanation:
This given statement is true.
A dominant allele is the one which overrides the expression of the other allele of the same gene.
For instance,
R is a dominant allele and give red color to flowers while r is the recessive allele and give white color to the flowers
Rr together will give red color to flower because R will dominate r
Answer:
The star is a member of an eclipsing binary star system
Explanation:
- A careful explanation about the measurement reveals that the star maintains a steady and apparent shape of brightness and at most of the time remains brighter.
- With and usual intervals of about the 73 hours and then the star becomes contestant dimmer for about every toe hours and is due to the fact that the star is a member of the eclipsing system.
Answer:
Rank of the stars from shortest to longest distances:
Barnard's Star (M4)
61 Cygnia A (K5)
Alpha Centauri A (G2)
Sirius (A1)
Spica (B1)
Explanation:
The habitable zone, also known as the circumstellar habitable zone, is the range of distances from a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets.
The location of a star’s habitable zone is dependent upon its luminosity, which is the amount of light emitted by an object in a unit of time, because a star’s luminosity increases with time; and also the star's mass.
The inverse square law of light brightness can be used to determine the extent of the habitable zones for different luminosity stars with the formula:
star boundary = Sun boundary × squareroot[(star luminosity)/(Sun luminosity].
Answer:
D
Explanation:
Before setting up a settlement water is on of the factors to consider
Answer:
Explanation:
Human activities affect the operation of physical environment processes, and the results rebound on the human world. The human factor is an important consideration in assessing climate, landform, and ecosystem changes. The physical environment provides resources and a platform to use those resources, but can also be a hazard to people. Therefore human impact as a subject is of special concern to physical geographers. This interest has developed from studying the impacts of the environment on human activities, to understanding the impacts of humans on the environment and attempting to reduce them. There is now overt recognition of the role of the human factor, wh ich is also reflected in an increase in applied work by physical geographers. The effects of human activit ies and physical environmental modifica tions range from being entirely local to global, and can be immediately evident or they may manifest slowly over time and become of concern at some time in the fu ture. The duration of the effects can be short-lived or everlasting. Many examples can be observed in our surrounding landscape. While this chapter describes and discusses only some of the impact of human presence in New Zealand, the conceptual context of humans as agents of environmental change
