Sea otters are found primarily off the coast of California. They are one of the main predators of sea
urchins, Sea urchins feed on the roots of kelp beds, effectively killing large areas of kelp. Kelp beds
are important because they provide a safe location for several species of fish to spawn and hatch
their offspring. Data suggests that sea otters are a keystone species in their ecosystem.
What will most likely happen to this ecosystem if sea otters are permanently removed?
ОА.
OB.
Other species will evolve the ability to eat sea urchins, keeping the urchin population
under control.
The sea urchin population will rapidly increase, resulting in less kelp and a decrease
in biodiversity.
Sea urchins will assume the role of keystone species, allowing the ecosystem to remain
balanced,
OC.
Fish that reproduce in kelp beds will adapt to living in open water, becoming the primary
producers in the area.

Answer:B The sea urchin population will rapidly increase, resulting in less kelp and a decrease

Explanation:I researched it .

Which of the following is NOT a
reason that plants (and
photosynthesis) is important for
animals?
O Because animals eat plants,
absorbing the energy that
those plants absorbed from
the sun through
photosynthesis.
O Because animals need
oxygen to breathe, and
plants produce oxygen.
Because animals can use
plants for shelter, raw
materials, and medicines.
ILL GIVE BRAINLISTT!

Reverse genetics can be useful for: Question 4 options: Determining the function of a gene Forensic analysis Cloning desirable animals Amplifying gene sequences

Write 2-3 sentences to show your understanding of how the following words connect together in the water cycle: Evaporation, Condensation, Precipitation, Freezing, Melting

Which solution would most likely cause a plant placed in it to become firmer and more rigid?
hypertonic
hypotonic
isotonic
osmotic

A fluid-filled sac in or around a testis is known as a ____.

Which example best illustrates a method to show differences among earth’s layers? carson models how the continental crust varies in thickness. marisol records atmospheric and oceanic temperatures at several beaches. eliza analyzes seismic wave activity from an earthquake using a computer model. oscar determines the pressure at different depths of earth’s crust.

what is the water cycle and explain along with the process!​

ANSWER ALL THE QUESTIONS FOR BRAINLIEST

How long ago did the common ancestor of all the organisms on this phylogenetic tree exist?

b. Which two lines diverged 30 million years ago?

c. List all modern descendants of the organism that was alive at the point indicated by the asterisk.

According to Model 1, when did the Giant Panda line diverge from the line that led to modern
bears?

According to Model 1, what animal shares the most recent common ancestor with the Brown
Bear?

In a complete sentence, describe what the branch points and lines in a phylogenetic tree
represent.

Which of the two branches from the common ancestor in Model 1 has the most living
descendants?

6. According to the phylogenetic tree in Model 1, the Red Panda is most closely related to which
animal?

7. Which are more closely related, the Giant Panda and the Red Panda or the Giant Panda and the
Polar Bear? Justify your answer using grammatically correct sentences.

Which of the following soil samples is the most porous?

will give brainliest :)

What is the name of the functional group formed when simple sugars combine?.

Use the drop-down menus to complete these statements. Enzymes act as catalysis, coupling reactions with spontaneous reactions. This is important, because without enzymes, processes would not occur. Spontaneous reactions are normally

Can you guys see if you can do this? Link attached

Define cancer in terms of the cell cycle. A. cells display contact inhibition B. cell division stops C. cell division occurs repeatedly without control

A scientist uses materials in her lab to separate DNA fragments by size. What process is she using?

Reading Focus Question:
Which parts of the biodome
contain carbon?

If mendel had crossed a true breeding dominant plant with a true breeding recessive plant, in which of the three generations is the recessive trait visible? f1 generation only p generation only f1 generation and f2 generation p generation and f2 generation

06

Some students investigated the effect of drinking caffeine on reaction time.

They used a drink containing 32. 25 mg of caffeine per 100 cm

This is the method used.

1. Divide the students into four groups, A, B, C and D.

2. Measure and record the reaction time of each student using the ruler-drop test.

3. Students in:

• group A drink 200 cm of water

• group B drink 200 cm of the caffeine drink

• group C drink 400 cm of the caffeine drink

• group D drink 600 cm of the caffeine drink.

4. Repeat step 2 after 15 minutes.

0

6

1

Describe how to do the ruler-drop test.

[3 marks]

Antibody molecules and receptor molecules are similar in that they both *

(1) control transport through the cell membrane

(2) have a specific shape related to their specific function

0 (3) remove wastes from the body

(4) speed up chemical reactions in cells

PLEASE HELP WILL GIVE BRANLIEST!

A. all
b. none
c. theee-fourths
d. half

how does energy grow through an ecosystem HELP

Which restriction endonucleases would cleave a dna molecule at the given sequences? the complementary dna substrate strand is omitted for clarity.

In a population with brown and green alleles for color, genetic drift.

The diagram below shows the positions of Earth, sun, and moon during two types of tides. The picture on the left is labeled Tide 1 and shows the Earth and sun along the same horizontal line and moon above Earth. The picture on the right is labeled Tide 2 and shows the Earth and sun along the same horizontal line and the moon below Earth. What impact do both positions have on the tides?
The difference is greatest between the high and low tides.
The difference is almost equal to the high tide between the high and low tides.
The gravitational forces due to the sun and the moon cancel each others' effect.
The gravitational forces due to the sun and the moon amplify each others' effect.
Question 11(Multiple Choice Worth 4 points)
[O.02]The table below shows the difference between the average temperatures in April and October in four locations.


Location Difference between the average temperatures in April and October (in degrees Celsius)
A 4.5
B 1.7
C 6.8
D 4.0

Which of these locations is most likely closest to the ocean?
Location A
Location B
Location C
Location D
Question 12(Multiple Choice Worth 4 points)
[O.02]Which of these statements best explains why sea breeze blows during the day in coastal locations?

Sea gets heated up faster than land during day time.
Land gets heated up faster than sea during day time.
Sea gets cooled faster than land during day time.
Land gets cooled faster than sea during day time.
Question 13(Multiple Choice Worth 4 points)
[O.02]Vertical movement of deep ocean water is caused by

forces of wind
phytoplanktons
dissolved nutrients
variations in density
Question 14(Multiple Choice Worth 4 points)
[O.04]Which of these diagrams best represents the position of the moon when the location P experiences the highest tide?

Picture shows Earth with the North pole labeled P. A small circular moon is shown on the left of Earth.
Picture shows Earth with the North pole labeled P. A small circular moon is shown on the right of Earth.
Picture shows Earth with the North pole labeled P. A small circular moon is shown above the point P.
Picture shows Earth with the North pole labeled P. A small circular moon is shown above P, slightly towards right.
Question 15(Multiple Choice Worth 4 points)
[O.03]Which of these statements best describes the properties of tsunami waves?

They have long wavelengths and are driven by strong winds.
They originate as high amplitude waves and travel at a very high speed.
They have long wavelengths and travel at a very high speed.
They are driven by strong winds and originate as high amplitude waves.
Question 16(Multiple Choice Worth 4 points)
[O.03]The distance between the first and third crest of an ocean wave is 24 meters. What is the wavelength of the ocean wave?

6 meters
8 meters
12 meters
24 meters
Question 17(Multiple Choice Worth 4 points)
[O.04]Martha designed a model to show the positions of Earth, sun, and moon when there is greatest difference between high and low tides. Which of these is most likely the model designed by Martha?

Picture shows sun, moon, and Earth along the same horizontal line.
Picture shows the sun and Earth along the same horizontal line and the moon above Earth.
Picture shows the sun and Earth along the same horizontal line and the moon below Earth.
Picture shows the sun and Earth along the same horizontal line and the moon above Earth slightly towards right as shown in the art.
Question 18(Multiple Choice Worth 4 points)
[O.05]What are people in a coastal location in Florida most likely to do if there are abnormally high winds leading to storm surges and dangerous rip currents?

engage in water sports like surfing
shift to inland locations temporarily
enjoy recreational activities on the beach
build barriers on the coastline to prevent flooding

The movement of water from high to low concentration across a semipermeable membrane is best defined as:.

What is a control and an experimental group in an experiment? What is the purpose of each?

PLEASEEEE HELP, I REALLY REALLY NEED HELP
THANK YOU
Researchers in Tokyo recently discovered that a layer of dead bacteria can protect living bacteria beneath it for up to eight years. These bacteria beneath the protective layer of dead cells are resistant to radiation, desiccation, and lack of nutrition. These protected cells can even travel long distances in a vacuum without being killed. What idea for the origin of life is BEST supported by the description here? A) panspermia B) abiogenesis C) primordial soup formation D) formation of life at hydrothermal vent locations

ANSWER FOR POINTS AND BRAINLIEST PLEASEEEE

Which of the following describes a way to reduce the activities that generate solid waste?
1. Compost food instead of throwing it in the garbage.
II. Buy reusable items that won't break easily.
III. Buy products made from new materials.

1. I only
2. II only
3. I and II
4. I, II, and III

When chickens hatch, the pip appears first. What is a pip?.

Which system transports nutrients from the digestive system through out the body

During fermentation, yeast break down pyruvate into ____________ and acetaldehyde, and ____________ is regenerated to keep glycolysis running and producing a small amount of ATP.