The process by witch gases trap heat near the earth is known as

How do fraternal twins form? A - two eggs are fertilized by one sperm B - two sperm fertilize an egg C - A fertilized egg splits in two D - two eggs are fertilized by two sperm

With a tension pneumothorax, which factors contribute to severe hypoxia?

In humans, the male has an X and Y sex chromosome. The human female has two X chromosomes. In birds, the female has a Z and a W sex chromosome while the male has two Z chromosomes.

Select the best answer for the question. 8. According to the cladogram of primates shown, which key cultural feature was shared exclusively by only homo sapiens and Neanderthals? A. Burying dead/religious beliefs B. Artistic creation C.

The subsections of a myofibril that perform muscle contraction are called

Which choice is a biotic factor of an ecosystem soil air ants sun

Which of the following are necessary for a seed to germinate? 1. moisture content of seed must be at least 9% 2. Moisture content of the seed must be less than 9% 3. certain enzymes in the seed are activated 4. temperature must be above 80 degrees 5.

Give 2 possible circumstances or actions that may lead to a decrease in the TFR of a population

What's system includes oceans, lakes rivers and groundwater's

What extinction event wiped out the dinosaurs