What is the layer of soil in polar tundra that is always frozen is called

An extreme disturbance happens in an ecosystem. How does an ecosystem change as succession happens after this disturbance? A) there is less biodiversity in the ecosystem. B) the population of most species decreases.

Makenzi like to study alone in a room in her school library but it's been in use the past few times she's trying to study there what should Makenzi do since she likes to sit in that particular room

Why plant dont have specialized respiratory system

Which of the following is a non renewable resource? A. hydropower B. Solar C. Petroleum D. Biomass

What are constants identify at least two

A nucleus bordered by a membranous envelope is found in

Will frogs exposed to the hormone estrogen lay more eggs?

Homologous pairs of chromosome line up along the center of the cell

Which area of the world currently houses most people? (approx 4billion) North/South America Africa Asia + Australia/New Zealand Europe

8. Which is a characteristic of exponential growth?