What is positive feedback loop?

De que se trata la teoría endosimbiotica

Why is it important to test only one variables during an experiment?

A clastic rock is named according to what?

3) A 0.1 ml sample of a log phase culture contains 10,000 bacterial cells/ml. This 0.1 mL is added to 9.9 ml of fresh culture medium broth. Assume a generation time of 30 minutes, and no limiting nutrients.

Using ld50 as the measure of toxicity, which chemical is the most toxic?

What type of information does our DNA contain?

Can someone describe the main theories of intelligence

Which of these statements is correct about a theory? It cannot be contradicted. It is accepted by a few scientists. It does not explain observations. It can be changed by current evidence. i think its D but im not sure

3. Which organelles would exist, in higher numbers, in the following types of cells? a. White Blood Cell house b. Cardiac Muscle Cell House

Which layer of the atmosphere does all weather take place?