Did plants first appear in the Ordovician period?

Photosynthesis takes place faster in which type of light?

In which layer of the ocean are you likely to find the most plants A epipelagic zone B bathypelagic zone C hadalpelagic zone D abyssopelagic zone

Which stations signal has waves with higher energy

3. What are potential social implications from genetic engineering that should be considered, in your opinion?

Hakeem wants to explain why only one side of the moon is visible from Earth. Which comparison would provide the best support?

Acid precipitation is an agent of what kind of weathering?

When do scientists consider a hypothesis valid? A. when the hypothesis is testable B. when the hypothesis is published in a scientific journal C. when more than one person supports the hypothesis D. when experimentation shows it to be true

In cherry trees, white flowers are dominant over pink flowers. cross a homozygous dominant tree with a purebred recessive tree. what is the phenotypic ratio of the offspring? a. 4 ww b. 4 white selected: c. 4 ww d. 4 pink

What happens to Earth when it is farthest from the sun? A) It moves fastest, B) It stops rotating, C) It moves slowest. D) It stops revolving

Deer ticks are responsible for spreading Lyme disease. This organism, which feeds on the blood of warm-blooded organisms like mice, deer, and humans, is best described as a (1) predator (3) parasite (2) scavenger (4) host