What does the presence of new rock near an oceanic ridge indicate? There is always a deep-sea trench underneath.
O There is evidence of seafloor spreading.
O They are made from oceanic crust.
O They have iron oriented in different directions.

help :(

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

a covalent bond, specfically triple bond

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.