Answer D is the correct one!
The right and left ventricles are responsible for pumping blood while the right and left atria are responsible for receiving blood. These are the four main chambers of the heart that are responsible for transporting oxygenated blood within the body.
Some possible answers are: u<span>nrestricted growth, unlimited use of cars and building or extensive road networks. Unrestricted growth in a city means that there is often insufficient housing near the city centre, and people move outwards to find affordable housing. The use of cars along with extensive road networks has also provided people the ability to commute longer distances to work, resulting in more outlying residential areas. I would add lack of housing planning as another factor leading to housing prices near the city centre being unaffordable for most middle-class families.</span>
First thing is Male gametes are called sperm and Female gametes are called eggs. So some physical differences are that the eggs are spherical in shape, much larger then sperm, and are immobile (they stay in the female reproductive organ during fertilization). Sperm are smaller, are in a cone shape, and have tails so the could move to the egg during fertilization.
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid.
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