Anaerobic photoautotrophs were the first organisms to release oxygen into the early atmosphere.

a. True

b. False

Vytorin is a relatively new drug used to treat hypercholesterolemia, and it actually contains two active, efficacious ingredients.

Which solution would most likely cause a plant placed in it to become firmer and more rigid? hypertonic hypotonic isotonic osmotic

Which of the following is likely to be associated with a lower acid level in soil? A. heavy rains B. high clay content C. high organic content D. presence of thriving foxglove

The fact that some people enjoy skydiving while others regard it as terrifying, shows that A) Stressors are events with a high level of stimulation B) One must be in the exhaustion stage before the stimulus event is perceived as stressful C)

What happens after the ovules of a flower are pollinated (this is actually for science but I did not see the choice)

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