Answer:
C. Large-scale oil spills are damaging to water quality, aquatic life, and bird populations.
Explanation:
Answer:
The correct answer will be option-true
Explanation:
A bright-field microscope is an optical instrument widely used by students and researchers all over the world.
The bright-field microscope is a compound light microscope which uses the light to see the samples. In the microscope the samples appear darker in color on the bright or light-coloured background. This enables the viewer to clearly see the sample in the microscope.
Thus, true is the correct answer.
B. magnetic and gravitational fields
C. gravitational, electric, and magnetic fields
D. electric field only
Answer:Option C. gravitational, electric, and magnetic fields
Explanation:
An electron is a negatively charged particle having mass, m = 9.1 × 10⁻³¹ kg and charge, q = -1.602 × 10⁻¹⁹ C. Gravitational field is created all bodies having mass. Hence, a moving electron also creates gravitational field.
A charged body creates electric field around it. And when the charged body moves, it also creates magnetic field. Hence, a moving electron creates gravitational field, electric field and magnetic field.
Therefore, the correct answer is option C.
b. A decrease in dissolved oxygen
c. An increase in phosphates
d. A decrease in phosphates
The answer is A: A decrease in dissolved oxygen.
The more plants using photosynthesis, the more oxygen in the air and in the water. The less plants, the less the oxygen. I AM SMORT. *MOGOLOVANIA INTENSIFIES
Ans. (D). if the egg is not fertilized.
The major female sex hormones (estrogen and progesterone) are released by ovaries. During ovulation, ovary releases female gametes or eggs. After the release of eggs, corpus luteum is formed in the ovary, which releases both the female hormones (estrogen and progesterone) and prepare uterine lining for potential pregnancy.
When fertilization occurs, corpus luteum continuously secrets female hormones and allows implantation. However, if the egg is not fertilized, the corpus luteum starts to degenerate and secretion of female hormones stops.
Thus, the correct answer is option (D).
Water exists in all the statesofmatter which are the solid, liquid, and gaseous states.
Water is known to exist in three different physicalstates. These are the solid state as ice, the liquid state as water itself, and the gaseous state as water vapors.
Under the conditions of standard temperature and pressure, the freezing point of water is zero degrees Celsius. At this temperature, water starts to freeze and attains a solid form which is in the form of ice. The density of ice is lower than the density of water because of the fixed intermolecular distances in ice.
Under the conditions of standard pressure and temperature, water exists in liquid form between temperature ranges of zero to a hundred degrees Celsius. Liquidwater is essential for all organisms. It functions as a universal solvent.
At a temperature above hundred degrees Celsius, the intermolecular integrity between the molecules of water starts to decrease and ultimately breaks completely. In these conditions, the water turns into vapors.
Therefore, water exists in all the states of matter which are solid, liquid, and gaseous states.
Read more about statesofwater, here
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