What did early South American civilization do to promote farming

What traits did Sir William Gilbert have that made him a good scientist?

if 2 houses are made of hardwood bit ones walls are twice as thick as the other, which house would be better at reducing the rate of cooling

The public is not yet able to purchase hydrogen fuel cell powered cars because engineers have to determine how the cars perform A. On racecar tracks B. In real-world conditions C. In flooded environments D. On closed courses

Below is a metabolic pathway having 3 chemical reactions and 3 enzymes. Enzyme 1 has 2 binding sites--1 for the substrate A and another for the end product D.

What is efficiencywhat is the formula of mechanical advantage and velocity ratio of labour

3. What are the challenges of looking for Dyson spheres?

Imagine you came to the lab and found a resistor with color code Blue, Red, Brown, Gold. What is the resistance of this resistor (with uncertainty). (HINT: Uncertainties should have only one significant digit and should always be rounded up)

How much would it cost to cover the entire land area of United States with dollar bills? To answer this question, you may find the following information useful: The contiguous United States (all of the states minus Alaska and Hawaii) can be

An air mass that forms over Arizona and New Mexico will be?

Which medium below conducts sound the fastest? A. a wall B. Steel C. Plastic D. Cardboard