Humans secreting pheromones is an example of which form of communication?

a.

physical

c.

biological

b.

chemical

d.

diurnal

Which of these factors is associated with sustainable farming? A. Desertification B. Monoculture C. Intensive farming D. Food security

What is the difference between quebec and ontario?

What do sclerenchyma and collenchyma have in common? They are both thin-walled. They are both dead cells. They both function for support. They both function for food production and storage.

What is a soil horizon? Question 13 options: soil that is still mostly rock material bare soil from which all vegetation has been removed a layer of soil with characteristic properties a pictorial view of soil showing its ecosystem

Which of the following is true of a parasitic relationship? A. The host benefits from the relationship, and the parasite is harmed. B.

Which is made up of organic molecules? copper electrical wires plastic storage containers table salt antacid

How does nitrogen leave a food chain? A. Primary consumers eat nitrogen-containing green plants. B. Producers absorb nitrogen-containing nutrients by their roots. C. Decomposers break down nitrogen-containing waste material from primary consumers. D.

Diffusion is important for living organisms because ...

What does dichotomous means when classifying objects or organisms?

Monoecious plants Dioecious plants Angiosperms Gymnosperms A. has megasporangiate and microsporangiate flowers on the same plant B. has megasporangiate and microsporangiate flowers on different plants C. produce flowers and fruits D.