Which of the following is an example of mechanical control of nonnative species? a. pesticides b. herbicides c. net barriers d. inspections please select the best answer from the choices provided a b c d

Answer:

The answer is c. net barriers.

Non-native species can do a great harm to native species or ecosystem and there are many ways to control them. Net barriers are mechanical control. Pesticides and herbicides are chemical control. There are also natural (biological control) control, such as diseases and pests, and environmental control, by altering the environment.

The cell membrane protects our cells
against infections by invaders, but
sometimes the cell membrane isn't 100%
effective at preventing these infections.
What happens when an infection occurs
in a cell?
A. The invader is kept out of the cell by the cell membrane.
B. The invader is denied entry into the cell by the cell
membrane.
C. The invader finds a way into the cell.

What type of muscle controls leg movement?

A) striated
B) cardiac
C) smooth

Which one is it? 1, 2, 3, or 4?

The most common source of water contamination is _______.
a.
sewage
b.
pesticides
c.
fertilizers
d.
none of the above


Please select the best answer from the choices provided

A
B
C
DThe most common source of water contamination is _______.
a.
sewage
b.
pesticides
c.
fertilizers
d.
none of the above
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Please select the best answer from the choices provided

A
B
C
D
any1 w a n 2 r p

A flower population that originally ranges from white to red becoming mostly pink over several generations is an example of what type of selection

Which of the following is NOT TRUE about asteroids or comets?
O Asteroids are in a fixed orbit in the solar system like a ring between Mars and Jupiter.
O Comets are made of ice and rock with a "tail" we can see when it gets close to the Sun.
Asteroids are basically big pieces of ice floating in the solar system
Comets have huge orbits that can keep them away from Earth for hundreds or even thousands of years.

Mutations and genes regulations

Using your model, which of these would lead to an increase in carbon dioxide in the atmosphere? Select the TWO (2) that apply

Explain how the processes of sedimentary rock formation change the geosphere.

How did Mendel do to pollinate the pea plants?

In 2001, scientists found a fossilized skeleton from about 110 million years ago. The fossil resembled a modern crocodile in virtually every way, except for one: The fossil was 40 feet long, which is almost twice as long as the largest modern crocodile ever found. From this discovery, scientists concluded that

Which tissue makes up the husk of coconut?​

The white matter of the cerebellum is known as the.

If a plant cell completes the cell cycle in 24 hours, how many plants cells will be produced in a week?

(With explanation)

which of these would lead to an increase in carbon dioxide in the atmosphere? Select the TWO (2) that apply
1.a decrease in respiration
2.a increase in respiration
3.a decrease in photosynthesis
4.a increase in photosynthesis

Who discovered the advantages of AC over DC( alternating current and direct current)?

Survival of the fittest and evolution were proposed by what scientist?.

what is it called if a large mass of rocks is sliding downa slope

Explain one way that carbon gets back into the atmosphere?

Hippopotamuses live in Africa’s rivers and lakes. They’re herbivores and coexist with other herbivores and carnivores. Which action could lead to a decrease in the number of hippos?
A.
a decrease in the number of predators
B.
a decrease in the number of other herbivores
C.
an increase in the number of producers
D.
an increase in the number of other herbivores

Facilitated diffusion is a type of
passive transport, which means it
does not require energy.
Which of the following is an
example of facilitated diffusion?

A. liquid molecules colliding
B. plants bringing nutrients into their roots
from the soil
C. protein channels embedded in the cell
membrane
D. the sodium-potassium pump actively
bringing sodium and potassium into the cell

Which of the following factors has the greatest effect on blood pressure?
blood volume
blood pH
blood oxygen levels
blood glucose levels

Where is chlorophyll found?
in the roots
in the stem
in the chloroplast
in the stomata

Small molecules that allow communication between cells of the immune system and regulate the growth or activation of white blood cells are known as

Carolyn and Ken are learning about the geosphere, atmosphere, biosphere, and hydrosphere. They put sand in a small swimming pool. They dug a hole in the middle and filled the hole with water. They turned a fan on and watched how the water and sand changed.

A 40x objective lens and a 10x eyepiece will jointly provide a
magnification of
Your answer
This is a required question
a

Does photosynthesis occur in all plant cells?

Jayne's science class is doing a laboratory investigation on cells. Her teacher gives them each a cotton swab to collect cheek cells from their mouths. They then smear the cheek cells onto a glass slide and look at the cells under a microscope.

What can Jayne expect all of her cheek cells to contain?
A.
a cell wall
B.
a nucleus
C.
a chloroplast
D.
all of these

A cell with numerous ribosomes is probably specialized for

What are the three main places we find water in the body?