While collecting samples of rocks, a scientist collects several that contain fossils. what is most likely the type of rock in the scientists sample?
a. metamorphic rock
b. igneous rock
c. sedimentary rock
d. mineral rock

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

Pls in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes