4. Which human activity would (NOT) be classified as one that can harm
water source?*
O A. water pollution
B. waste of water resources
C. using sustainable ways to grow crops

PLEASE HELP!!!!! FIRST ANSWER GET BRAINIEST!!!!!
A lichen is an organism that structurally appears to be a single organism. But a lichen is actually two different organisms—a fungus and green algae—living together as one organism. The fungal partner derives its nutrition from the photosynthesizing algae. How does a lichen differ in its photosynthetic activity from Elysia chlorotica, the sea slug that’s considered to be a photosynthesizing animal?
A.
In lichens, the fungi photosynthesize on their own, while Elysia chlorotica forms a relationship with a photosynthesizing plant.
B.
In lichens, the relationship with the algae lasts throughout the life cycle, but in Elysia chlorotica, the relationship occurs only during the immature juvenile stage of the slug’s life cycle.
C.
Lichens can photosynthesize only because of the living algal partner, while Elysia chlorotica incorporates chloroplasts from algae into its cells.
D.
In lichens, the association between the fungi and algae is permanent, while Elysia chlorotica associates with a photosynthesizing organism only when it requires food.

Which of the following has the stages of getting food products to consumers in the
correct order?

Distributer, wholesaler, retailer, packager

Harvester, wholesaler, processor, distributer

Processor, packager, harvester, retailer

Producer, packager, distributer, retailer

plssss this is for my final exam :(

why is the bluefin tuna considered an endangered species?

Waste produced by agriculture, mining, households, industry and other
human activities can end up in which of the following?*
A: Oceans
B:groundwater
C:streams and rivers
D:all of the above

Does this satisfy the octet rule why or why not

Also this passage is related to the previous questions

Heredity is the way animals and plants pass traits on to their offspring. True False

HELP ASAP
PLEASE !!!!

Why is suburban sprawl tightly linked with environmental problems caused by
transportation?
A. Commuters who live in suburbs are dependent on automobiles that emit air
pollution.
Х
B. Commuters who live in suburbs are more likely to walk and suffer from air
pollution
C. Commuters who live in suburbs are dependent on mass transit systems that
emit air pollution.
D. Commuters who live in suburbs are dependent on mass transit systems that
add to water pollution.

Explain how mitosis maintains the chromosome number
of the original cells when forming new cells.

define immunology?
please answer this question​

if the atmosphere is 21% oxygen and the cornea contains 15% oxygen, which direction will more of the oxygen molecules travel: into the cornea or out of the cornea

According to the key, which statement best describes Fiordland crested penguins? A. They have only black and white feathers and live north of the equator. B. They have yellow or orange feathers on top of their heads and no bare skin around the base of their beaks. C. They have only black and white feathers and live south of the equator. D. They have yellow or orange feathers on top of their heads and bare skin around the base of their beaks.

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?

What is the graphical representation of age structure known as?
OA.
age group
OB. age graph
Oc. age scale
OD
age pyramid

After radiation exposure, a cell that cannot divide will most likely stay in which phase?

Albinism, the total lack of pigment, is due to a recessive gene. A man and woman plan to marry and wish to know the probability of their having any albino children. What are the probabilities if:
Both are normally pigmented, but each has one albino parent.
Dad is an albino, the mom is normal, but mom’s father is an albino.

The ? era featured the longest periods with no life forms on Earth.
A Palezoic
B. Precambrian
C. Cenozoic
D. Mesozoic

What is the constant variable in that? Please help!! You’ll get brainlylist..

In what stage does DNA synthesis occur? And what gets produced?
S phase; homologous pairs
S phase; sister chromatids
G phase, homologous pairs
G phase, sister chromatids

6. What are the key structures used in the translation process?

What would "two pairs of chromosomes in the original cell" look like?

3. Run the simulation four times and record the post-drought frequencies in the table.
Trial
1
2
3
4
Average
Blue Allele
T5
.5
.625
.5
.53125
Red Allele
.5
.5
.375
.5
.46875
Blue Phenotype
.25
.25
.39
.25
.285
Purple Phenotype
.5
.5
47
.5
.4925
Red Phenotype
.25
.25
.14
.25
.225
4. Describe your results.
I
to search
O

what are infectious agents?

A. agents that investigate a different type of infection
B. attackers that can cause a response by the immune system
C. attacker that cannot cause a response by the immune system
D. infectious agents are always good for the human immune systeme

In rabbits, straight ears (E) are dominant to floppy ears (e), Two rabbits are crossed, and 50% of their offspring have floppy ears. Which cross represents the
genotypes of the parents?
EEXEE
EE x ee
Ee x EE
Ee x ee

transcription & translation worksheet
anyone know how to do this?

Which of the following is one of the chemical building blocks of cells? a. water c. air b. food d. carbohydrates

The information in this rectangular codon chart could be represented in a different way (ex: circular codon chart).
CIRCLE ONE:
TRUE
FALSE

Describe the organsim causing coronavirus​

how do i help people i’m trying to add a biology answer that i got right but don’t know how

i tHoUgHt yOu WeRe aMeRiCaN