Most of the water vapor in earths atmosphere comes from

Cells have a matched pairs of chromosomes are

Why are enzymes important to living things?

What is a reflex response

You come to find out that sheila has another baby with blood type ab and she claims is fathered by the same man. if both babies have the same father, what are the results of your paternity test?

If a scientist is observing biotic and abiotic factors, which of the followin

What could be the blood type of the unknown person in row one of the diagram?

Danny has taken a cross section of a seed. Which of the following are the parts that he will see? pollen grain, sperm, and egg stored food, flower, and pollen grain seed coat, stored food, and an embryo cone, zygote, and seed coat

One trait a plant can have is either red leaves or brown leaves another trait is tall stems or short stems a plant used in a dihybrid cross has the genotype rr Tt what is the phenotype of this plant

When Jacob starts running, his legs move faster and his heart rate increases. Which types of muscles are involved in these changes? A.) Skeletal muscles control his leg movement and smooth muscles control his heart rate. B.

2. According to the cladogram of primates shown, which key cultural feature was shared exclusively by only homo sapiens and Neanderthals? A. Artistic creation B. Tool building C. Walking upright D. Burying dead/religious beliefs