Genetic Engineering has led to genetically modified plants that resist insects, pests and bacterial and fungal infections. Which outcome would most likely be a reason why some scientists recommend caution in planting genetically modified plants?1Points
A
improved agricultural yield and profit

B
increased genetic variation and diversity

C
reduced pesticide and herbicide use

D
unplanned ecosystem interactions

A farmer observed that an increase in the nitrogen content of the soil in a field was followed by an increase in producer productivity. What does this observation most likely indicate about the relationship between nitrogen and the producers in the field?

1Points
A
Nitrogen was a biotic factor.

B
Nitrogen was a limiting factor.

C
Nitrogen became a surplus resource.

D
Nitrogen became a selection pressure.

Ash from a volcanic eruption decreases the amount of available solar energy for a region. How will a decrease in available sunlight most likely affect ecosystems of this region?

1Points
A
Decomposer populations will increase, causing a decrease in consumer populations.

B
Decomposer populations will increase, causing an increase in consumer populations.

C
Producer populations will decrease, causing a decrease in consumer populations.

D
Producer populations will decrease, causing an increase in consumer populations.

A male pistol shrimp with protective eye tissue pockets mates with a female shrimp without protective eye tissue pockets. All of the offspring have eye tissue pockets. What is the most reasonable conclusion that can be made about the eye tissue pocket trait in pistol shrimp?

1Points
A
It is a recessive, autosomal trait.

B
It is a dominant, autosomal trait.

C
It is a trait that results from multiple alleles.

D
It is a trait that results from incomplete dominance.

How do atoms form bonds with other atoms

What are some ways precipitation occurs?

Where does photosynthesis occur?

Movement of water across a membrane is called ______. A. osmosis B. mitosis C. diffusion D. active transport.PLEASE HELP

Which baby belongs to the Meanys?



Forensic science worksheet

Carol and Maria spread some dirt out in a flat pan. Their classmate Ben blew over the dirt with a straw. Some of the dirt moved and formed ruts and bumps. They propped up one end of the pan with a board so the dirt looked like a big hill. Then the girls sprayed the dirt with some water in a spray bottle. More dirt moved as the water ran down the hill. Both the wind and the water modeled what process? A) decomposition B) erosion C) gravity D) weathering