Which characteristic of four different dinosaur fossils makes a dinosaur most similar to the present-day birds?

Flexible wrist

Flapping ability

Flight feathers

Primitive feathers

The A and B genes are on nonhomologous chromosomes. A zygote is formed by the fusion of a sperm with the genotype AB and an egg with the genotype ab. The zygote develops into a male.

Which part or parts of the paragraph indicate that oxygen is important to life? Oxygen is the most abundant element on Earth. As the largest component of most rock-forming minerals, oxygen comprises 46.

Which is a disadvantage of using wind as an energy source? A) It may be unreliable. B) It is not naturally occurring. C) It produces a lot of waste. D) It generates large amounts of electricity.

How many legs does spider have

How do invertebrates and animals without a specific immune system defend against invaders?

Margot is pregnant with her first child, and she is deliriously happy! She and her husband have some tests taken, but before the doctor can come in and review the results, Jim sneaks a peek at the file with the test results.

How do cancer grows and spreads

Which statement best illustrates the concept of the interrelationship of living things with the physical environment, as found in the definition of ecology? A) Hawks and eagles often compete with each other. B) White-tailed deer shed their antlers.

Which statement is true about a liquid but not a gas? Question 7 options: A. It has more internal energy than the solid state. B. It has close to a constant volume as pressure is applied to it. C.

Ryan accidentally drops a very heavy object on his foot. In a matter of just a few seconds, he feels a tremendous amount of pain. He experienced the pain quickly because neurons rapidly carries the impulse to the brain.