Answer:
all are important for life
Explanation:
they are all needed
This is called the nacreous layer, the pearly layer.
The forces which acts on the vase before the fall include:
- Force exerted by the table.
<h3>What is Force?</h3>
This is described as an influence which changes the motion of an object. The force exerted before motion is that which is exerted by the table , drag and force of gravity.
During fall, all other forces act except that exerted by the table thereby making it the most appropriate choice.
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Answer:
Explanation:
1. Describe two effects of insecticide use on the forest ecosystem other than the intended reduction of moths to protect the trees.
1. Insecticides when sprayed on a certain areas or spots can be blown by the wind to other areas or flow with rain water into nearby streams or local water bodies or seep through the soil into ground water. This is called indirect application or secondary poisoning,
2. Insecticides can affect the food chain because they reduce the biomass of primary consumers and there is is less food available to secondary consumers which eat poisoned plants or prey those who have been exposed to pesticides.
Insecticides can travel great distances through the environment and they can also flow with rain water into streams so fish can be directly or indirectly impacted by pesticides. The phenomenon of nutrient enrichment of aquatic bodies is known as eutrophication, which deteriorate the water quality leading to death of fish. Some long-term exposures cause abnormalities or mutations in developing fish larvae, while acute exposure can cause immediate fish die-offs. The liver, kidney, brain and gills of exposed fish are extremely vulnerable to chemical exposure.
Answer:
3- Breast-feeding can reduce an infant’s risk of infection, allergies, and certain chronic diseases.
.4- All mothers should consume 500 kcal extra daily while breast-feeding until weaning of the infant.
5- Women with AIDS or active tuberculosis should feed formula rather than breast-feed.
Explanation:
Breastfeeding is also a great benefit to the environment and society, that is, it does not require the use of energy for manufacturing or create waste or air pollution. Also, there is no risk of contamination and it is always at the right temperature and ready to feed. Given the importance of breastfeeding for the health of mothers and babies, Centers for Disease Control and prevention supports breastfeeding through hospital initiatives, work-site accommodation, continuity of care and community support initiatives. Colostrum is the earliest breast-milk produced, beginning in mid-pregnancy (12-18 weeks) and is continually produced for the first few days after baby's birth, it provides all the nutrients and fluid that your newborn needs in the early days, as well as many substances to protect your baby against infections. Mothers with untreated and active tuberculosis infections are not advised to breastfeed. They may breastfeed after their infection is cured or brought under control so that it does not spread to the infant.
