Answer:
passed on, inherited, passed on to offspring, most adapted to the environment or have the best adaptive traits or higher genetic fitness
Explanation:
A decrease in dissolved oxygen.
This is because oxygen is a byproduct of photosynthesis. If the plants are in water, some of the oxygen they produce will become dissolved in it. Without those plants, you have less dissolved oxygen.
He needs help or he scared or he feels uncomfortable.
Answer:
Correct answer is C.
The star must be 29 times larger than Earth's sun, and a supernova explosion must have occurred.
Explanation:
A black hole is a giant, gaseous and huge structure present in the space.In physical appearance, it ca be 29 times more massive and bulky than the sun. The black hole pulls energy and matter from the surrounding galaxies and is becoming enormous in size day by day.
Moreover, a black hole pulls light from its surrounding matter with so much gravity that it gets trapped and can not escape from it. Stellar is a kind of black hole which emerges when a big star collapses or falls in automatically. When it occurs an exploding star "supernova" is formed which bursts out into an explosion.
