State whether the following statements are True or False. 1. Manures are substances added to the soil to increase plant nutrients.
2. Inorganic matter stimulates soil micro- organisms.
3. Compost manure add nutrients in uncertain amounts.
4. Water is use to provide a moist environment for rotten to take place.
5. The three primary nutrients; nitrogen, calcium and phosphorus are required in large amounts.
6. Plant nutrients are released to the soil faster than they are when organic matter is used.
7. Inorganic manure do not contain any organic matter.
8. Simple fertilizers contain one main nutrient.
9. Powder granules, pallets and crystals are all forms of organic matter.
10. Animal manure includes animal dung, animal urine and night soil.

How can you keep track of variables in a science experiment?

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

The accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. the accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. chimpanzees and gibbons are the most closely related the chimpanzee's closest surviving relative is humans orangutans are the primates least closely related to chimpanzees old world monkeys and gibbons are the most closely related