the watson & crick model suggests that if you know the sequence of nucleotides on one strand of dna, making the second strand is simple. what feature of the model is directly responsible for this?

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a