<h2>Option a) is correct</h2>
Explanation:
Growing improved crop plants that have nitrogen fixing enzymes
- Nitrate pollution occurs because of the introduction of excessive amounts of nitrogen to ground water and surface water
- Use of synthetic fertilizers has resulted in high levels of pollution and eutrophication of lakes and rivers
- When nitrogen fertilizers are leached deep down into the soil they cause serious pollution problems
- Plants that can do nitrogen fixation include members of family Fabaceae
- The symbiotic association between legumes and Rhizobium is the most important nitrogen fixing association; rhizobia bacteria convert nitrogen gas to ammonia and this process is called nitrogen fixation
Answer:
Originally, the distinction was based on morphological differences. However, it soon became that some types of organisms had different forms at various stages in their lives, here is why
Explanation:
changed genes is passed on to the next generation. Most mutations are bad, but some of them make the organism more successful in its life. Organisms that inherit that favorable new gene are likely to become more abundant than others of the species. (geologic times)
Answer:
B. The DNA replicates.
Explanation:
Activity in the chromosomes must occur before the beginning of mitosis. The cells will enter the S1 phase in preparation to divide.
Answer:
true
Explanation:
a virus needs a host to replicate its like fleas they lay eggs on dogs to replicate
