The half life of a certain radioactive element is 1250. What percent of the atoms remain after 7500 years

How is cell differentiation able to happen?

In which group would you put pasta and breads according to the mypyramid plan?

What do you understand by meneustral cycle

Invasive species create unnatural competition for native species which can cause a decrease in the population of the native species. Question 9 options: True False

Which is not an example of someone maintaining homeostasis? A. A boy shivering in the cold B. A girl sweating when it's hot C. Someone breathing hard when jogging D. A man bleeding from a cut

Soil formation is most influenced by__. Wind speed. Cloud cover. Air pressure. Rain fall.

What is the basic cause of ocean tides? A. Gravitational attraction between the Moon and the entire solar system B. Gravitational force of atmospheric pressure C. Gravitational force of volcanic activity D.

Which type of chromosomal mutation causes this form of Down syndrome?

Chlorine is added to kill remaining microorganisms in the water. true or false.

Sensation is the process by which our sensory receptors and nervous system take in stimulus energies from the environment;