Answer:
B. Fungicides to treat affected crops and planting rust-resistant varieties
Explanation:
Leaf rust is a disease caused by the fungus <em>Puccinia triticina</em> which affects leaves, stems and grains in wheat and related cereals (i.e., barley and rye). This disease is known to affect crops in moist conditions. Leaf rust disease is spread through fungi spores from infected wheat plants to healthy plants. Recently, leaf rust-resistant varieties have been developed by crop improvement programs aimed at introducing leaf rust-resistant (lr) genes involved in resistance against this important crop disease. Moreover, there are different types of fungicides (e.g., Prothioconazole and Tebuconazole) used for chemical control of this disease.
Answer:
C.were formed at the same time.
Explanation:
If the same index fossils occurred in two separate rock layers, the two rock layers would probably have been established at the same time. Index fossils aid the characterizing and classify of geologic period.
Biodiversity impacts the environment and its stability because one organism depends on the other to survive, it is call the food change. The more biodiversity the healthier the environment.
Shelter: an ecosystem will only provide a certain amount of shelter for its organisms.
Competition: it will be determine by the amount of food available in that ecosystem.
Food: the amount of food available will be a factor on the population an ecosystem will be able to maintain.
Predators: there have to be a balance between predators and prey or food available.
Disease: It will affect the number and health of all the organisms living in the ecosystem.
Answer: plasma
Explanation:
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