<span>Hydrogen chemolithotrophs are almost all facultative chemolithotrophs; the sulfur
chemolithotrophs and nitrifying bacteria are nearly all obligate chemolithotrophs.</span>
2 i think. O would recommend googling first but yeah
The level of succession which involves a small snake is found eating a cricket in a grassland is a Secondary succession.
<h3>What is Secondary succession?</h3>
This is the type of succession which involves an area previously occupied by living things is disturbed or disrupted.
The grassland area has been occupied with living things already which makes it a secondary succession.
Read more about Secondary succession here brainly.com/question/520254