Supernova:
In this stage, the star collapses and produces elements heavier than iron.
Planetary nebula:
In this stage, the star emits strong energy pulses that push away the outer layers creating a cloud of ionized gas around the core.
Neutron star:
In this stage, the star has reduced to an extremely dense core.
White dwarf:
In this stage, the star has reduced to a dense core.
Read more about star life cycle
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Answer:
large= supergiant, supernova, then a neutron star
small= giant, planetary nebula, white dwarf
Explanation:
star life cycle changes by these phases
Answer:
Graves´ disease is an autoinmmune disease that is caused when the immune system attacks the cells of the thyroid gland, which leads to an overproduction of the hormones secreted by the thyroid gland. This constant attack and destruction on the part of the immune cells causes the thyroid to increase in size, a condition that is commonly known as hyperthyroidism.
Hyperthyroidism can become a really serious issue because the excessive production of the hormones of the thyroid gland will increase the metabolic activity of all parts of the body and can, if left untreated, cause such serious conditions as blood clotting problems, type 1 diabetes, among others.
A. non-renewable
B. valuable
C. renewable
Answer:
B. valuable
Explanation:
non renewable: oil
renewable: wind
hope i could help
Answer:
In order to lower the temperature.
Explanation:
Mammals and birds uses evaporative cooling due to their high body temperature because this evaporative cooling removes the high temperature from the body. In this process, the water present in the body absorb all the extra heat and remove this extra heat from the body with change its state from liquid to vapors and the body's temperature cools down. This evaporative cooling is occurs in the process of sweating.
Evaporative cooling is an evolution-driven thermal regulation method that certain organisms utilise to cool their bodies. It mainly occurs in organisms living in hot environments like kangaroos.
Evaporative cooling is a biological process related to evolution and is used as a thermal regulatory method by certain organisms. Evaporative cooling occurs when an organism excretes water from its body surface, which then evaporates, absorbing heat and subsequently leading to cooling. This evolutionary adaptation generally occurs in organisms that live in warm or hot environments where they are exposed to high temperatures. An example of an organism using evaporative cooling is the kangaroo, which licks its forearms, allowing the saliva to evaporate and cool its body during intense heat.
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b. Oil immersion
c. Low power
d. Scanning
Answer:
The correct answer is option - C. low power objective.
Explanation:
In microscopes, low power objectives have a wide field of view and use to study the many smaller specimens or large specimens. 10X is the power of the low objective.
To study the depth of the field the lower objective rotated and aligned on the place over the specimen. When you move to high power objective the field of view gets close in and only can study the smaller specimen or small section of a large specimen.
Thus, the correct answer is option - C. low power objectives.
Answer: (C) Low power
Explanation:
The lowest power is the objective which has the largest depth of the field. The view of the filed closed when we switch to the higher power and on the other hand, the the filed vie become widest in the objective of the low power.
The largest depth in the field is focuses more on the lowest objective of the power. The depth of the filed is basically refers to the depth of the image space that focus on the object space specifically.
Therefore, Option (C) is correct.
Answer:
All adult sponges are sessile, meaning they are attached to some surface. Since they cannot move, sponges cannot pursue their food. Instead, they are filter feeders, meaning they obtain their food by straining the water for small bits of food like bacteria, algae, or protozoans.
Explanation:
Answer:
This methodology enables to measure simultaneously both the result and exposure in the group under study
Explanation:
A cross-sectional method is a type of scientific design based on observational data. The cross-sectional studies involve the use of diverse groups that differ in the variable investigated but share other features (for example, individuals with the same educational background, ethnicity, economic status, etc). This class of studies is generally used in developmental psychology.