which student correctly identified the outcome of meiosis?

HELP ASAP!! I NEED IT

What does natural selection act on?

Hi I need help and I’ll give brainliest for correct answers

A person suffering from anemia feels tired in short walk, Why?​

how do you create a compartment

A scientist could best determine which ion (F-, Cl-, Br-, or I-) produced the greatest electrical potential in the Experiment by comparing the electrical potential that develops between ice and:


a solution of each sodium salt at the same concentration.
a single sodium salt solution at different concentrations.
a single sodium salt solution at different temperatures.
droplets of sodium salt solutions at different collision rates.

What would happen if cytokinesis did not work properly?

1) DNA replication would not occur
2) A cell would have a nucleus with too many chromosomes
3) A cell would have two nuclei
4) New daughter cells would not have enough organelles or would be missing organelles
5) a cell would be smaller in size

Tom described a certain phase in mitosis as follows: The centromere splits. The paired chromosomes separate and shift to the opposite sides of the cell, which stretches the cell. Which of the following phases will take place just after the phase described by Tom?

Anaphase
Metaphase
Prophase
Telophase
!!!PLEASE HELP!!!

I really need help on question two. ANY HELP WOULD BE KINDLY ACCEPTED!!!

What is the structure in the diagram?

1. What is the Potential energy of an object that has a mass 10 kg and has a height of 50
(m)?

What is a common ancestor of all plants

18. What is precipitation that falls on land and flows over the surface of
the ground?

Atmospheric carbon dioxide dissolves into ocen surface waters

8 points
Look at the food web. In your response, answer the following questions
correctly for full credit: a) Identify the producers, primary consumers, and
secondary consumers in the ecosystem. b) What would happen if all the
hawks in this ecosystem were to die from an illness? c) Why would you
expect there to be fewer foxes than caterpillars in this ecosystem? d)
Which organism would have the smallest population? (8 points)

use the food web below to answer the following question.
which organism is a tertiary consumer in this food web?
tree
hawk
frog
caterpillar​

Which of these is a response to an internal stimulus?

A. A sunflower turns to face the rising sun.
B. A cucumber tendril wraps around a wire.
C. A pine tree knocked sideways in a landslide grows upward in a bend.
D. Guard cells of a tomato plant leaf close when there is little water in the roots.

What do mitochondrial and thylakoid membranes have in common?

Evaluate the neighbor's arguments in the following scenario. Are there facts he is overlooking?
An elderly neighbor says today's girls are less mature than they used to be. He says it used to be that by the time a girl had a mature body, she had
a mature brain to go along with it. The neighbor argues that it all comes down to bad parenting and too much television.

A segment of DNA that codes for the ability to make one type of protein molecule is known as a

Potato crops are grown for their carbohydrate content.
Describe how you could safely test the two species of potato to compare their carbohydrate content.

test for starch

test for reducing sugars


8 mark question - IGCSE

The human X and Y chromosomes

A. are of approximately equal size and number of genes.

B. include only genes that govern sex determination.

C. are both present in every somatic cell of males and females alike.

D. are almost entirely homologous, despite their different names.

E. include genes that determine an individual's sex.

Which type of blood vessel is most likely to clot and cause a stroke or a heart attack

In which structure of the neuron would you expect to find sites of dopamine
synthesis?
a. myelin
b. synapse
c. cell body
d. axon

3
The human body contains both bones and muscles. Bones are rigid, but muscles can contract
and relax to move the body. What explains this difference in body structures?
(1 Point)
A. Muscles are made of animal cells, and bones are made of plant cells
B. Bones and muscles are made of different kinds of animal cells
C. Bones contain more cells than muscles
D. Muscle cells form tissues, but bone cells do not

PLZ HELP ASAP!!!
Which of the following is a drawback to polyculture?


It allows multiple varieties of plants to exchange multiple resources from and to the soil.

It offers predictable large yields of a single crop.

It allows standardized growing techniques.

It is challenging to development and maintain.

This test/quiz is accepting submissions until Thursday, March 11, 2021 at 8:00 pm

Questions 1-19 of 19 | Page 1 of 1
Question 1 (5 points)
(03.01 LC)

Which is an example of a divergent boundary?

a
Great Rift Valley

b
Himalayan Mountains

c
Peru-Chile Trench

d
San Andreas Fault

Question 2 (5 points)
(03.02 MC)

A soil sample is 35 percent sand, 10 percent clay, and 55 percent silt. Use the following soil texture triangle to determine the type of soil present in this sample.

Soil texture triangle. Silty loam soil is approximately 50 percent or less sand, 30 percent or less clay, and 50 percent or more silt. Sandy clay soil is approximately 45 to 65 percent sand, 35 to 55 percent clay, and 20 percent or less silt. Loamy sand soil is approximately 75 to 95 percent sand, 15 percent or less clay, and 25 percent or less silt. Medium loam soil is approximately 25 to 55 percent sand, 5 to 25 percent clay, and 25 to 50 percent silt.
Public Domain

a
Silty loam

b
Sandy clay

c
Loamy sand

d
Medium loam

Question 3 (5 points)
(03.03 LC)

Which gas is the least abundant in Earth's atmosphere?

a
Argon

b
Carbon dioxide

c
Helium

d
Neon

Question 4 (5 points)
(03.02 MC)

In which of the following scenarios does weathering occur but not erosion?

Lichens growing on boulders dissolve minerals in the rocks.
Sand carried downstream by a river gradually settles to the riverbed.
Wind blowing against a cliff face causes sediment to fall to the ground.
a
I only

b
II only

c
III only

d
I and II only

Question 5 (5 points)
(03.03 MC)

How would the Coriolis effect alter movement of an air mass flowing from a higher to a lower latitude in the Southern Hemisphere?

a
It would deflect the path of the air mass to the east.

b
It would deflect the path of the air mass to the west.

c
It would deflect the path of the air mass to a lower altitude.

d
It would deflect the path of the air mass to a higher altitude.

Question 6 (5 points)
(03.02 MC)

A fast-growing town requires a new source of power. Because the town is located by a fast-flowing river, the town council votes to construct a hydroelectric power plant. How might this activity affect the local watershed?

a
The hydroelectric plant will likely flood the area behind the dam that is constructed.

b
The hydroelectric plant will likely pollute the water flowing down the waterfall.

c
The hydroelectric plant will likely pollute the air above the waterfall, leading to acid rain.

d
The hydroelectric plant will likely quit operating in the summer when the river dries up.

Question 7 (5 points)
(03.05 MC)

The state of California experiences periodic occurrences of severe drought conditions. Which weather phenomenon most likely causes this, and why?

a
El Niño, because of weakening of trade winds

b
El Niño, because of strengthening of trade winds

c
La Niña, because of increased upwelling of cooler waters

d
La Niña, because of decreased upwelling of cooler waters

Question 8 (10 points)
(03.05 HC)

The map below shows winter storm advisories in different parts of the U.S. (indicated in light purple and bright pink). There is a flood watch (indicated in green) due to severe thunderstorms and heavy rainfall:

The map of the United States is shown. The light purple and bright pink colors in the map indicate a winter storm advisory along the Appalachian Mountains, extending north. The same two colors appear above the Rocky Mountain Range near West Virginia, Utah, and Wyoming. The dark green color is a flood watch south of the Appalachian Mountains.
© National Weather Service 2020

Refer to the map to answer the following questions:
Identify the location(s) of upcoming winter storms in the continental U.S.
Identify the location(s) of upcoming heavy rains or flood in the continental U.S.
Earth's geography, climate, and weather:
Describe the general climate of the identified locations.
Explain how the geography of the identified locations affects precipitation in their region.
In mountainous regions, there are increases in global temperatures that affects that region's climate. Propose a solution for communities in these regions to be able to tolerate their unique climate.
Your answer:
Question 9 (5 points)
(03.05 LC)

Warm ocean water is carried eastward by wind towards South America to cause changes in global climate. Which of these events is described by the statement?

a
El Niño

b
La Niña

c
Land breeze

d
Sea breeze

Why is the presence of chlorophyll in plants important?
1. it creates ATP to power the process
2. it captures water to be used in the process
3. it assembles the sugar
4.it absorbs the solar energy needed to create the sugar

Quién propuso el primer mecanismo de herencia a partir de la observación y la experimentación con plantas?

WHAT IS AN ELECTRIC CIRCUIT? WHAT MAKES UP AN ELECTRIC CIRCUIT?
GIVE AN EXAMPLE OF AN ELECTRIC CIRCUIT.