Mary Smith

Northwestern State University of Louisiana
Science/Technology

Biography

Hello! I'm Mary and I have been an educator in Texas for the last seven years. My experience includes teaching English online for VIPKID, in-person 4th-6th grade science and middle school technology. I love encouraging my students to think independently and creatively. My diverse background and skill set would make me a great addition to your company.

Education

BA Graphic Design
Northwestern State University of Louisiana
MA Guidance and Counseling
Angelo State University

Educator Statistics

Numerade tutor for 5 years
11 Students Helped

Topics Covered

The Fascinating Chemistry of Life: Discovering the Building Blocks
Discover the Power of the Cell: Unleash Your Potential with Our Products
Survival of the Fittest: Life Through a Darwinian Approach
Ecosystems and Restoration Ecology: Restoring Balance and Biodiversity
Population Ecology: Understanding the Dynamics of Living Systems

Mary's Textbook Answer Videos

02:04
Biology

Draw the simplest stable ecosystem you can imagine.

Chapter 55: Ecosystems and the Biosphere
Mary Smith
02:06
Biology

How might a food web change if all decomposers were eliminated from it?

Chapter 55: Ecosystems and the Biosphere
Mary Smith
01:52
Biology

The 2017 population of the Netherlands was 17.1 million, and its land area is 15,768 square miles. The 2017 population of the United States was 325.4 million, and its land area is 3,717,796 square miles. Which country has the greater population density?

Chapter 53: Introduction to Ecology: Population Ecology
Mary Smith
03:03
Biology

Compare the two graphs in Figure $1-17 .$ What information does the second graph illustrate? What possible explanation can you give for the differences shown in the two graphs?

Chapter 1: A View of Life
Mary Smith
1

Mary's Quick Ask Videos

01:19
Biology

A student placed 20 tobacco seeds of the same species on moist paper towels in each of two petri dishes. Dish A was wrapped completely in an opaque cover to exclude all
light. Dish B was not wrapped. The dishes were placed equidistant from a light source set to a cycle of 14 hours of light and 10 hours of dark. All other conditions were the same for both dishes. The dishes were examined after 7 days, and the opaque cover was permanently removed from dish A. Both dishes were returned to the light and examined again at 14 days. The following data were obtained:
Which of the following best supports the hypothesis that the difference in leaf color is genetically controlled?
a. the number of yellow-leaved seedlings in dish A on day 7
b. the number of germinated seeds in dish A on days 7 and 14
c. the death of all the yellow-leaved seedings
d. the existence of yellow-leaved seedlings as well as green-leaved ones on day 14 in dish B

Mary Smith
01:08
Biology

Explain the conversion of energy that takes place when the sluice of a dam is opened.
a. Potential energy stored in the water held by the dam will convert to kinetic energy when it falls through the opening of the sluice.
b. Kinetic energy stored in the water held by the dam will convert to potential energy when it falls through the opening of the sluice.
c. Potential energy stored in the water held by the dam will convert to electrical energy, when it falls through the opening of the sluice.
d. Hydrothermal energy stored in the water held by the dam will convert to kinetic energy, when it falls through the opening of the sluice.

Mary Smith
01:31
Biology

Level $3 :$ Synthesis/Evaluation In agricultural areas, farmers pay close attention to the weather forecast. Right before a predicted overnight freeze, farmers spray water on crops to protect the plants. Use the properties of water to explain how this method works. Be sure to mention why hydrogen bonds are responsible for this phenomenon.

Mary Smith
01:45
Biology

Why is it unlikely that two neighboring water molecules would be arranged like this?
(FIGURE CANNOT COPY)

Mary Smith
02:03
Biology

DRAW IT Use the letters a-d to label where on the phylogenetic
tree each of the following derived characters appears.
$$\begin{array}{ll}{\text { (A) flowers }} & {\text { (C) seeds }} \\ {\text { (B) embryos }} & {\text { (D) vascular tissue }}\end{array}$$

Mary Smith
04:31
Biology

Level 3: Synthesis/Evaluation
SCIENTIFIC INQUIRY You are testing the hypothesis that
increased population density of a particular plant species
increases the rate at which a pathogenic fungus infects
the plant. Because the fungus causes visible scars on the leaves, you can easily determine whether a plant is infected.
Design an experiment to test your hypothesis. Describe your
experimental and control groups, how you would collect data,
and what results you would see if your hypothesis is correct.

Mary Smith
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