If element x has 80 protons, how many electrons does it have?

How is hardness defined when identifying minerals?

1. What needs might a child have that a parent would need to provide? 2. What are the qualities of a nurturing parent?

Neuroscientists, psychologists, and educators generally believe that teenagers need firm and consistent home and school environments that support learning and development.

This blood vessel supplies the heart muscle with oxygenated blood?

What's a substance that is used in genetic engineering

Which of the following changes in deciduous forests occurs in the winter? a. Trees regain their leaves. b. Trees block the flow of water and nutrients to their leaves. c. The leaves of trees begin to lose their chlorophyll. d.

Which statement about somatic mutations is true

uring which period of prenatal development would exposure to teratogens most likely cause defects to major body structures? a. embryo b. implantation c. fetus d. zygote

The table compares the features of two plant species that exist near the shoreline in South Florida. Tree Species Data Tree Species Shade Provided Native Low Exotic High The nesting sites of sea turtles are more successful when the sites have more

A student measures the length of a glass rod five times and records the data as: a. 23.487 cm b. 23.493 cm c. 23.516 cm d. 23.501 cm e. 23.477 cm The labeled value of the glass rod is 23.490 cm.