Answer:
The answer is A muscilar dystrophy
Explanation:
Progressive muscular dystrophy, which shows the patient by the symptoms that were manifested from three years of age and who started with walking on his toes and the difficulty in raising the legs accompanied by progressive weakness confirm this diagnosis worsening his clinical manifestation at nine years of age, where there is a marked skeletal muscle deformity that makes the use of a wheelchair necessary. we can discard miestemia gravis and multiple scoliosis because they are not pathologies of this age group, polio in turn is a contagious infectious disease that is eradicated in much of the world, mostly in developed countries thanks to the vaccine.
Answer:
Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
Explanation:
To survive natural selection, one must be fit and be able to adapt to the environment and situations, thus why it's called survival of the fittest.
Answer:
D The atrioventricular valve works as a rigid door to prevent water from escaping from the top.
Explanation:
the question is incomplete, but I annex the options and their explanation
When you compress the heart in this demo, why does the water leave the artery?
A It's like squeezing a sponge
B The arterial valve draws water from the ventricle.
C The atrioventricular valve has parachute-shaped fins to prevent water from escaping from the top.
D The atrioventricular valve works as a rigid door to prevent water from escaping from the top.
the atrioventricular valve during the contraction process closes at the top, thus avoiding the leakage of the liquid and leaving the artery that opens due to the force exerted by the volume and force of the ventricle.
Answer:
nuclear waste has radiation, which is harmful to humans, so nuclear waste has to be stored in special facilities. Nuclear waste takes a lot longer than regular waste to decompose too.
Explanation:
