Who invented the Newton scale

Are atoms completely lost or gain in a chemical re

How many covalent bonds can nitrogen have? a. 0 c. 2 b. 1 d. 3

A person with trisomy 21 has an extra copy of chromosome 21. What happened during meiosis that caused the person to get three copies of chromosome 21 instead of two copies?

What are some comparisons with the compound light microscope and a transmission electron microscope

Researchers crossed a heterozygous tall pea plant (Tt) with a homozygous short pea plant (tt). What is the probability that this cross will produce homozygous short (tt) offspring? A. 0% B. 25% C. 50% D. 100%

How do axial filaments differ from regular bacterial flagella? a. How do axial filaments differ from regular bacterial flagella? b. They do not function in cell movement. c. They do not rotate. d.

What conclusion can you make about how the carbon dioxide level has changed over time? The level has not changed. The level of CO2 has declined. The level of CO2 has risen. The level has reached its maximum.

Explain the conditions neededd for the growth of micro-organisms

A long-term relationship between two species that usually involves an exchange of food or energy is

The cities of Portland, Oregon, and Minneapolis, Minnesota, are at about the same latitude, but Minneapolis has much hotter summers and much colder winters than Portland does.