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lilavasa [31]
3 years ago
13

A sample is in the second half-life. What percent of the sample is stable at this point?

Biology
2 answers:
ivann1987 [24]3 years ago
6 0

Answer:

the answer is B

Explanation:sorry if im wrong TwT

Tatiana [17]3 years ago
4 0

Answer:

25%

Explanation:

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5 0
2 years ago
Read 2 more answers
Many marine organisms depend on up welling to bring nutrients to the surface. How might El Nino affect a fisherman's way of life
svp [43]
During an El Nino, warm water gathers along the West coast of South America, so the nutrient rich water is no longer being upwelled. keeping in mind that cold water sinks and warm water rises, usually the warm water near coastal regions would not be full of nutrients compared to the cold water where the nutrients fall. therefore, more fish will be located or migrate to areas of this nutrient rich cold water instead. So, many fishermen would not have high yields of fish ultimately affecting their way of life and money. also a lot of these fish that remain at the surface would not be as healthy or nutrient rich.

hope that helps! :))

3 0
3 years ago
Vineyards and orchards operate all year round. What are some practices from the recommended list of physical/cultural control th
Sloan [31]

Answer:

Some practices from the recommended list of physical/cultural control that you could do year-round to help control pests are as follow:

1. We can use those plant species that are more competitive. These plant species include release of chemical toxins that suppress other plants and insects.

2. Use of large Hight quality seeds.

3. By using narrow spacing in row and increasing seeding rate.

4. By using shallow seeding technique which allow desired plant species to grow and develop faster above the surface of soil.

5. By ensuring that our plant species is perfectly placed in that growing environment which is optimized with every specs.

6. By rotating the crops

7. By rotating plant species with different growing cycles and seasonal cycles.

8. By rotating herbicides with alternative modes of action to delay the herbicide resistance development.

8 0
3 years ago
What are the three characteristics of all vertebrates
Rudiy27
Notchochord, morphology, chordates
6 0
3 years ago
Escherichia coli belongs to the A) Proteobacteria. B) Gram-positive bacteria. C) Green sulfur bacteria. D) Spirochetes. E) Actin
satela [25.4K]

Escherichia belong to(A) PROTEOBACTERIA.

5 0
3 years ago
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