Answer:
There are 2 Valve Systems
Explanation:
The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).
Answer:
A) Preoperational stage is the correct answer
Explanation:
Preoperational stage: It is a second of a cognitive development that starts at the age of around two.which children begin to talk and it last at the age of approximately seven.
The features of the preoperational stage are:
- children develop imagination.
- They develop a memory that helps them to know the difference in the past and future.
Answer:
At first, a fetus cannot distinguish between different voices.
A fetus begins responding to sound at between 22 and 24 weeks but can only hear low frequencies, such as a dog barking or a lawn mower.
As the auditory system and the brain continue to develop, this range increases. By late pregnancy, the fetus can hear voices and distinguish between
so at 22 weeks they're in the middle of the second trimester and can hear sounds but in the 3rd trimester can distinguish between voices
I'd say c but I'm not positive
Answer:
Gender ratio in the World
As of 2021, There are 3,970,238,390 or 3,970 million or 3.930 billion males in the world, representing 50.42% of the world population. The population of females in the world is estimated at 3,904,727,342 or 3,905 million or 3.905 billion, representing 49.58% of the world population.
