Answer:
Contraction and relaxation of the heart is the function of the muscular system whereby illustrated by the pumping of the blood by the heart throughout the body. Though everyone is not aware, the constant contraction and relaxation of the muscles help fight gravity, that is why the muscular system is a great help in maintaining good posture.
Answer:
negative as it threatens local biodiversity
Explanation:
We design a model that explains how your experiment demonstrated the transfer of genetic material from father to offspring. In our model, we clearly identify where the transfer of genes from parents to children took place, and in this practical way, we explain heredity.
Heredity is the biological system of transmission of certain characteristics of living beings between generations. For the full functioning of this structure, genes are needed – a piece of DNA (deoxyribonucleic acid) that houses genetic information.
Some properties can remain inactive for generations, which does not represent their extinction, only the forgetting of one or several genes. However, this does not make it impossible for the carrier of the dormant gene to pass it on to their descendants.
In addition, genetic information is capable of disappearing as a result of environmental and climate change. In these cases, natural selection processes directly affect heredity.
With this drawing, it was possible to visualize how gene transfer occurs in a normal situation.
Learn more about Gene in brainly.com/question/787658
Answer: Calcium
Explanation:
The mineral that is in great demand during pregnancy because it is involved in building the skeleton is calcium (option 1). Calcium is essential for the development of the fetal skeleton and plays a crucial role in bone formation. Pregnant women need an increased intake of calcium to support the growth and development of the baby's bones and teeth.
While other minerals like iron, magnesium, and zinc are also important for various aspects of maternal and fetal health during pregnancy, calcium is specifically associated with skeletal development. Adequate calcium intake is important to prevent conditions like rickets in the baby and to support the overall health of both the mother and the developing fetus.