At each level of the food chain, what happens to about 90% of the energy? A) gained as energy B) lost as heat C) converted into unusable compounds D) excreted as waste

Observation:most car owners prefer cars that use Petrol instead of CNG Hypothesis:

A diploid cell with 2n = 20 chromosomes goes through meiosis. how many chromosomes will each of the daughter cells have?

Which of the following is not a branch of natural sciencie?

Thylacosmilus is a marsupial, and Smilodon is a mammal. Thylacosmilus and Smilodon both have saber teeth, but they do not share an ancestor that had saber teeth.

What is controlled experiment

The original regimen known as Pasteurization consisted of: 1. Heat at 100 degrees F for 60 minutes 2. Heat at 98.6 F for 30 minutes 3. Freeze at negative 32 degrees C for one hour following dessication 4. Heat at 62.8 degrees C for 30 minutes

Seedless plants can be vascular or non-vascular. True or False

What is the basis unit of structure and function of all living organisms?

Wrinkles and sagging skin in elderly individuals are the result of

It bothers me when the phospholipids stick together so I do my best to keep them apart.