Answer:
B. An Estuary
Explanation:
it is a coastal body of water surrounded by land
Answer:
Green plants are responsible for oxygen in the atmosphere.
Explanation:
-Green plants undertake a process of photosynthesis, in which they use energy from the sun, carbon dioxide and water to form simple sugars and also release oxygen to the atmosphere. The simple sugars from the process may be used by the cells for energy or be stored in form of energy for future use.
-Oxygen is a product of photosynthesis which is released to the atmosphere.
Answer:
The earth system usually refers to the different ways in which various physical, chemical as well as the biological processes interacts with one another and it includes the land areas, oceans, atmosphere, minerals and also the different cycles such as carbon, nitrogen, sulfur and so on.
These processes are continuously taking place at, on and below the surface of the earth, maintaining an equilibrium. The life existing on earth is directly dependent on these conditions and on-going processes. When there occurs changes in these conditions, then the lives on earth are affected.
For example, the lives are dependent on the climatic conditions, and when suppose the concentration of green house gases and other toxic elements are increased in an ecosystem, then the temperature will eventually rise, and there reaches a point when it becomes difficult for life to sustain. The organisms will suffer from different diseases.
Thus, the growth of life on earth affects when there occurs changes in the earth's system.
Answer:
The male reproductive system includes two testes, which like the ovaries, have a dual function.
Explanation:
They produce the male germ cells (spermatozoa) and the male hormones (androgens). The germ cells differentiate to morphologically mature spermatozoa in the seminiferous tubules within the testis.
Answer:
I think the amount of atmospheric CO2 has increased in the last 550 million years.
Explanation:
Carbon dioxide creates greenhouse gases heating up our atmosphere and climate. Since the CO2 is rising, our planet is heating up, global warming, and one effect of that has been the ice caps melting..
