Population density is calculated by
a. dividing the number of organisms in a region by the land area
b. multiplying the number of organisms in a region by the land area
C. dividing the land area by the number of organisms in the region
d. by subtracting the land area from the number of organisms in a region

Answer:

A). Dividing the number of organisms in a region by the land area.

Explanation:

The formula for calculating population density PLUS example:

Which type of feedback does your body normally operate through (Positive or Negative)? ​

(PLS HELP DUE IN 5 MINS!) The pteropoda, or “sea butterfly”, is a tiny sea creature about the size of a small pea. Pteropoda are eaten by organisms ranging in size from tiny krill to whales. They are a major food source for the North Pacific juvenile. Their shells are made up of calcium carbonate. The photo provided is the shell of a pteropoda. The shell can dissolve within a 45 day period. What can one infer about what is causing the shell of the pteropoda to disappear while in a marine environment?

a) Carbon monoxide (CO) is being released by natural systems. Oceans are absorbing this excess of CO and the pH within the oceans is increasing.

b) Methane (CH4 is being released too quickly from burning of fossil fuels. Oceans are lowering their pH and ocean acidification occurs.

c) Natural sources are releasing an excess of CO2 to the oceans. The marine photosynthetic organisms are emitting too much oxygen. This is return is causing ocean acidification.

d) The excess of CO2 emitted from anthropogenic sources is being absorbed by the oceans from the atmosphere. This results in more hydrogen ions in the ocean, which increases acidification.

Cellular membranes enclose a cell and its contents from its environment. Establish which of the
following comprises cellular membranes.

A. Lipids

B. RNA

C. DNA

D. Microsphere

The segment of____
that codes for a____
is called a____.

Each of the following can kill pathogens in the body, except:
A Vaccines
B Antibodies
C Leukocytes
D Antibiotics

How does glucose enter a cell?
a. through a peripheral protein
b. through integral proteins
c. through cholesterol
d. between the phospholipids

A person with a genetic disease that codes for a specific protein could be 5 points
a candidate for which of the following?*
A. Cloning
B.gene therapy
C. DNA fingerprinting
D. Gel electrophoresis

How does the method of reproduction differ in each of the three species?

Kennedy I love you I am gay and I know you are to so please answer I willing give you brainist please don’t answer until she answers

How are humans impacting the carbon cycle positively?

What is the relationship between changing co2 concentration and temperature?

Which effect does an ocean have on the climate??

Answer choices

Cool ocean air causes a cool climate.


There is no influence on climate from an ocean.


Warm ocean air causes a dry climate.


Rushing water from tides cools the land.

Will mark brainliest!!
How does leaf structure allow for exchange of gases (O2 and CO2). Select 3 options.

Stomata (pores) let gases pass in and out.

Leaf is flat and thin = large surface area

The leaf has got Chloroplasts.

The Spongy Mesophyll layer has lots of space for gases to diffuse.

URGENTTTT I willl mark brainliest Place the organisms in order of their trophic level on the food chain starting with producer and going upward

Angel Queen Fish
Nassau Grouper
Plankton
Sponges

Please help!
Will mark brainiest for the most helpful answer!

I get it! Now I know that organisms are classified _____

What is the specific role of chlorophyll a and chlorophyll b in a leaf in simple terms?
(100 points)

Please don't copy-paste stuff online.

Drag the tiles to the boxes to form correct pairs
Use the Hertsprung Russell diagram to determine which condition describes each star. Use the arrows to help locate the stars
Betelgeuse
SUPERGANTS
1.
Sru
Betelgeuse
the Sun
Salus
The star can no longer support nuclear fusion because it has exhausted its supply of
hydrogen
The star's hydrogen supply is running low, so it is using hydrogen from outside the
core
The stars experiencing nuclear fusion at score

The table below shows the percentages of bases in a DNA sample. How much Guanine (G) should you expect to find in the sample?

What catastrophic event occurred in
California? What did officials learn from
the event?

Imagine that you are a scientist who has discovered a new object. You want to find out if the object is biotic or abiotic. You observe several characteristics about the new object. Which of these characteristics would tell you that the object is abiotic, or not alive?(1 point)

The object cannot create energy.

The object has a crystalline structure.

The object can mutate.

The object responds to stimuli.

Where m and n are statements mVn is called the _____ of m and n .

what was the name given to an offspring that is the exact copy of its parent

examples.
Protein
a. Long term energy storage and
heat insulation (keep warm)
Carbohydrate
b. Make up the cell wall (Cellulose)
and short term energy
Lipid
c. Store genetic information
DNA
d. Speed up the rate of chemical
reactions with enzymes
NOTES Definitions:

How do metamorphic rocks work?

I need help with science

Evolution is a process of change over time. A leading theory explaining why things evolve is: *

A. Inbreeding

B. Natural Selection

C. Kin Selection

D. Natural Ingredients

Which of the following is NOT a characteristic of bacterial soft rot?
O Foul odor
O Tissues become saturated
O Leaf tips dry out
P
ang
Bacteria clogs vascular system
1
2.

What basic nutrients necessary for life are present in soil?
A hydrogen, carbon, oxygen, nitrogen phosphorous, sulfur
B rocks, minerals, microorganisms, root hairs, animals
C iron, magnesium, silicon, sodium, calcium, potassium waste
D matter, bacteria, dead plants, animals​

PLEASE HELP!! PICTURES ARE ADDED! PLEASE ONLY ANSWER IF FOR SURE!!

1. What are some similarities among the organisms listed on the cards? What are some differences?





2. What is the taxonomy of each organism from largest to smallest grouping?





3. What phyla do you have in your chart?




4. What classes do you have in your chart?




5. What orders do you have in your chart?




6. What families do you have in your chart?




7. Give four examples of how either some or all of the organisms in this activity are related to one another based on how they are classified.
I would like to state i need help organizing the cards so i can take a picture and send it. (as seen in question 2!) If i can give brainliest i will!! Please this will help alot!!