Atumor is actively producing both vegf and fgf, factors that stimulate angiogenesis, but no new network of blood vessels to the tumor has been established in spite of the fact that blood vessels are nearby. this observation suggests that most likely

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .

92 sathe best for the question 11. most animals and plants reproduce sexually. this means that dna is passed down to new organisms from two parental organisms. which of the following is a key advantage of sexual reproduction?

The negative impacts of nonnative species generally outweigh the positive impacts