Other than light, what two things are required for photosynthesis?

Fossils in Precambrian rocks are rare, while there are many fossils in rocks from the Phanerozoic eon. What does this evidence suggest? A. There was a major change in the diversity of life in the Phanerozoic eon, probably due to mass extinction. B.

Why is maintaining homeostasis particularly important to single-celled organisms?

Which of these is an example of a hypothesis A) observe a plant kept in the dark B) wonder why plants grow well in sunlight c) leaves may change color due to temperature d) add different quantities of water to three potted plants

Catalysts increase the rate of a reaction by

The energy of the Sun is converted into energy by the plants. n which situations is work being done? A Hannah leans against her locker, but it doesn't move. B Andy's car rolls down a hill with the engine off.

All of the members of particular species that live in the same area are called

Antibiotics are routinely introduced into the food of cattle, chickens and other livestock, which causes the animals to grow faster. Since the cost of antibiotics is low, the use of antibiotics is an easy way to achieve faster weight gain in animals.

Which of the following is NOT a type of air pollution? a. acid rain b. mercury c. ozone d. oxygen

What are the effects of Chernobyl

The line y=-8 is ... horizontal, slanted, vertical? The line perpendicular to the line y=-8 is horizontal, slanted, vertical? The equation of the line perpendicular to the line y=-8 (-4,-2) is x=-4 or y=-4 or x = -2 or y=-2