Yes it does follow that ab has determinant 0
Elevation or Altitude effect climate
Prevailing global wind patterns
Topography
Effects of Geography
Surface of the Earth
Climate change over time
The impact of a person or community on the environment, expressed as the amount of land required to sustain their use of natural resources. That is for the first question
Answer: a. A shared ancestral character.
Explanation:
A shared ancestral character is the character or feature that two lineages of same or distinct species have in common derived from a common ancester. The four limbs in birds and mammals is the example of this.