Still haven't got corona, even a global pandemic don't want me..
sigh*

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

The “ecological footprint” left by a citizen of a developed nation is about four times larger than that left by a citizen of a developing nation. why is this the case?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled