How many kingdoms are there in the domain archea?

A. 1

B. 3

C. 4

D. 2

(Apex)

You are working in a lab with a stable, unreactive element. How many valance electrons does this element have? 4 6 2 8

Which hormone affects the heart beat? Glucagon Insulin Adrenalin Oxytocin

In which environment would primary succession take place? Check all that apply. an abandoned field a cooling lava flow a valley under a glacier an unused farm a burnt forest a deserted mine

Which of the following shapes is the most similar to earths orbit

Is a vesicle organelle in both animal and plant cell?

Which of the following is NOT inclusion a typical age structure diagram

A high school biology teacher asks her students to collect daily rainfall amounts at each of their homes during the summer. The results will be collected and used to establish a baseline for local weather patterns.

In an ecosystem snakes eat salamanders, and salamanders eat earthworms. How would the ecosystem be affected if a large number of snakes are caught and moved out of the region as a part of a conservation program?

Which conditions occurs when the bronchial tubes are inflamed and

Chromosomes uncoil and become chromatin in in which stage of the cell cycle