ANSEWER: In 2017, 71% of the global population (5.3 billion people) used a safely managed drinking-water service – that is, one located on premises, available when needed, and free from contamination.
90% of the global population (6.8 billion people) used at least a basic service. A basic service is an improved drinking-water source within a round trip of 30 minutes to collect water.
785 million people lack even a basic drinking-water service, including 144 million people who are dependent on surface water.
Globally, at least 2 billion people use a drinking water source contaminated with faeces.
Contaminated water can transmit diseases such diarrhoea, cholera, dysentery, typhoid, and polio. Contaminated drinking water is estimated to cause 485 000 diarrhoeal deaths each year.
By 2025, half of the world’s population will be living in water-stressed areas.
In least developed countries, 22% of health care facilities have no water service, 21% no sanitation service, and 22% no waste management service.
Answer:
There are 3 main types of T cells: cytotoxic, helper, and regulatory. Each of them has a different role in the immune response. Cytotoxic T cells (Tc cells) have a co-receptor called CD8 on their cell surface. CD8 partners with the T cell receptor and with MHC class I molecules, acting as a sort of bridge.
Explanation:
Answer:
Option C
Explanation:
According to World Health Organization(WHO), a threatened abortion is pregnancy related bloody vaginal discharge during the first half of pregnancy without cervical dilation.
It is most common with women who bear children at much older age. The chances of having a threatened abortion increases as a woman's age increases.
The common symptoms are the ones that the woman has; bright red bleeding,cramping etc.
The patients should be monitored so as to avoid progression into an inevitable abortion. Also, she should be giving analgesic drugs to relieve her pains. The patient should repeat pelvic ultrasound weekly and also, abstain from sex.
Answer:
the video describes an unhealthy heart as being enlarged.
Explanation:
duh i watched the video
