question:
A predator at the top of any food chain (that is, one that is preyed upon by no organism) is called an apex predator; examples include the orca, sperm whale, anaconda, Komodo dragon, tiger, lion, tiger shark, Nile crocodile, and most eagles and owlsand even omnivorous humans and grizzly bears.
In what pyramid position is an organism not preyed upon by any other predators?

answer: yes

question:
The burrowing of marine polychaetes, which may constitute up to a third of all species in near-shore environments, encourages the development of ecosystems by enabling water and oxygen to penetrate the sea floor.
How do burrowing marine annelids help ocean ecosystems?

answer: yes

question:
Adding barium also increases the refractive index.
How does barium affect glass?

answer: yes

question:
4 sold 310,000 copies in its first week and debuted atop the Billboard 200 chart, giving Beyonce her fourth consecutive number-one album in the US.
How many copies of 4 sold in the first week?

answer:
yes