Question

The similar bone structure of the hand of a human, wing of a bat, and fin of a whale are considered homologous structures because

a. There is no evidence that these species share a common ancestor

b a common ancestor had this bone structure and the descending species inherited this bone structure, which became adapted for the different environments of a human, bat, and whale

c. The similar bone structure of the hand of a human, wing of a bat, and fin of a whale are actually analogous structures

d. None the above

Obtaining information about a physical object or the environment from a distance (non contact sensors) is called:

Ecosystem science

Electromagnetic Spectrum

Remote Sensing

None of the above

Satellites for environmental science typically image or measure the Earth in which portions of the electromagnetic spectrum?

Visible

Infrared

Microwave

All of the above

Recent deforestation in Ecuador is primarily due to the expansion of what type of agriculture?

Cocao

Chocolate

African Palm

Itapoa Project

Answer 1

1) The correct option is B.

Homologous structure are those having same structure but different functions. This suggest that the same structures which were originated from the common ancestor have changed their function to better adapt in their respective environment. Al the three structures mentioned above ( hand of human, wing of bat, fin of whale) are the modification of fore limbs which have similar structure .

2) The correct option is C ( remote sensing)

Remote sensing is the technique of obtaining information about the objects without having any physical contact with the object. It is obtained by a remote sensing device which emitt the radiation to the object from a distance then absorb the reflected radiation and processes it by the help of software.

3) All of the above. Environmental satellites.

4) not sure .