Answer:
true
Explanation:
Daylight hours are shortest in each hemispheres winter. between summer and Winter Solstice, the number of daylight hours decreases, and the rate of decrease is larger the higher latitude. the fewer sunlight hours the colder the nights.
(A nebula)
is a cloud of gas (hydrogen) and dust in space. Nebulae are the birthplace biths. There are different types of nebula. An Emission Nebubla such as Orion nebula, glows brightly because the gas in it is energised by the stars that have already formed within it.
(A star)
is a luminous globe of gas producing its own heat and light by nuclear reactions (nuclear fusion). They are born from nebulae and consist mostly of hydrogen and helium gas.
(red giant)
This is a large bright star with a cool surface. It is formed during the later stages of the evolution of a star like the Sun, as it runs
out of hydrogen fuel at its centre.
(red dwarf)
These are very cool, faint and small stars, approximately one tenth the mass and diameter of the Sun. They burn very slowly and have estimated lifetimes of 100 billion years.
(white dwarf)
This is very small, hot star, the last stage in the life cycle of a star like the Sun. White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth.
(Black holes)
are believed to form from massive stars at the end of their life times. The gravitational pull in a black hole is so great that nothing can escape from it, not even light. The density of matter in a black hole cannot be measured.
Answer AND Explanation:
The thyroid gland secretes thyroxine, an iodine-containing hormone. The thyroxine stimulates carbohydrate, protein and lipid metabolism in most organs and tissues of the body. It has a general effect of increasing the metabolic rate. Deficiency of iodine in the diet causes the disease called goitre. This is characterized by an enlargement of the thyroid gland.
The crust is the top layer of earth, mostly covered with dirt and rocks. Other layers are rock or molten rock. The top layer is way cooler than the other layers, the closer you get to the Earth's core, the higher in temperature the layer is.
I hope this helped you!
Brainliest answer is always appreciated!
