The answer is D. The life cycle of a star is dependent on its mass. Stars by forming at nebulas as protostars. When the sun exhausts hydrogen fuel at its core, the core begins to fuse helium to carbon and the core becomes hotter but smaller. The outer layers are pushed outwards and the sun becomes larger and paler. Later, the helium fuel begins to run out and the sun loses the outer expanding layers into a planetary nebula. The remaining core is a white dwarf.
Stars that are 10 times our sun's solar mass just explode to supernovas when their hydrogen fuel is exhausted.
Answer:
#1 These new combinations result from the exchange of DNA between paired chromosomes. Such exchange means that the gametes produced through meiosis exhibit an amazing range of genetic variation.
Explanation:
Thats the only one i rem
When two heterozygous individuals are crossed with two different traits, the ratio will always be 9:3:3:1. The 9 will be the 2 dominant alleles so the answer is A.
The correct answer is option c. Exocytosis.
The exocytosis is a process, by which the cells transport their secretions out of the cells in a membrane bound vesicle. The exocytosis generally transports the water-soluble molecules out of the cell. The products present in the membrane bound vesicle, which is transferred is released outside the body of the cells.