What is the action force and the reaction force when someone swims?
No link
Answer:
The action and reaction forces are reciprocal (opposite) on an object. The swimmer pushes against the water (action force), the water pushes back on the swimmer (reaction force) and pushes her forward. The ball puts a force on the wall (action force), and the wall puts a force on the ball (reaction force) so the ball bounces off.
Explanation:
Answer:
the force is push and the reaction is moving forward.
Explanation:
Which of the following is a population?
A) all of the fish, bacteria, and mammals that live in a lake
B) all of the trout that live in a lake
C) all of the different kinds of fish that live in a lake
D) all of the living and nonliving things that interact in and around a lake
Answer:
maybe C because it says different kind of fish that live in one area that is a lake
Based on the phylogenetic tree, identify approximately how many millions of years ago the earliest south Asian river dolphin evolved
my guess is that it is 130 Million
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Answer:
I can't see it but good luck with the answer
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Answer:
Apples : adenine
Trees : thymine
Cars : cytosine
Garages : guanine
Explanation:
The bases in DNA are adenine, thymine, guanine, and cytosine. It helps to remember the popular mnemonic, "apples in the tree," that helps you remember that A goes with T, and "car in the garage," so C goes with G, to understand how DNA bases pair. The bases in RNA are adenine, uracil, guanine, and cytosine.
integrated science
plant reproduction
Flowering plants reproduce sexually through a process called pollination. The flowers contain male sex organs called stamens and female sex organs called pistils. Cross-pollination happens when the wind or animals move pollen from one plant to fertilize the ovules on a different plant.
who discovered haley's comet? when and how?
Answer:
Edmond Halley discovered Haley's comet and it was discovered in 1758 he discovered it by examining reports of a comet approaching earth in 1531.
determine the gender (male or female) and health of her unborn child.
Answer:
More examples?
Explanation:
Answer:
soo like what exactly do you mean
how is eubacteria organized?
1. What causes the tectonic plates to move?
2. How did the creator of this video explain why
some plates are moving faster than others?
3. What are the 3 main types of plate boundaries?
Answer: 1. The heat from radioactive processes within the planet's interior causes the plates to move, sometimes toward and sometimes away from each other. This movement is called plate motion, or tectonic shift. 2. But scientists were at a loss to explain why some pieces of crust move much faster than others. A new study suggests these tectonic plates control their own speed more than the mantle does. ... The velocities of these plates and the velocities of the boundaries between these plates vary significantly on Earth." 3. Divergent boundaries -- where new crust is generated as the plates pull away from each other.
Convergent boundaries -- where crust is destroyed as one plate dives under another.
Transform boundaries -- where crust is neither produced nor destroyed as the plates slide horizontally past each other.
Explanation:
What is the approximate speed of earth flying through space around the Sun?
100 mph
1000 mph
50,000 mph
100,000 mph
Answer:67,000 mph, which is about 50,000mph
In humans, hair color and hair type are controlled by simple dominance. Brown hair (B) is dominant over blonde hair (b). Straight hair (H) is dominant over curly hair (h). A man who is heterozygous for brown hair and also has curly hair is crossed with a blonde-haired woman who is heterozygous for straight hair.
Answer:
These are the possible phenotypes of the offspring
Which characteristics of living things were the trumpet vines displaying as the
stems twisted around the trellis?
A. Reproduction only
B. Response to a stimulus and growth and development
C. Response to a stimulus only
D. Reproduction and growth and development
Alex is studying a population of fifty organisms that belong to the same species. Some of the organisms have dark spots, some have light spots, some have no spots, and some have stripes.
How does this species most likely reproduce?
Answer:
Sexual reproduction
Explanation:
There is a significant amount of genetic variation (diversity) here. Asexual reproduction results in little to no diversity, so we can assume this species reproduces sexually. Hope it helps :)
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1) According to the diagram, divergence among mammals took place about 75 mya.
2) Scientists are able to determine common ancestors by studying molecular data.
3) Darwin's theory of evolution by natural selection states that animals change over long periods of time.
4) Scientists are closesly studing how genes reorganize themselves.
5) Some scientists, however, think new species evolve quickly.
6) Still, among scientists, the principles of natural selection remain unchanged and highlight how animals evolve.
7) The main tool for the study of evolution is careful observation of fossils and the anatomy of animals.
8) Scientists also study animal embryology.
9) What no one doubts is the wide diversity among organisms on Earth.
10) The divergence that took place among mammals helps us understand why whales and dolphins are mammals and not fish.
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When a trait has two forms and one trait is expressed over the other, the trait that is
expressed is said to be ─
Answer:The trait that is expressed is said to be dominant
Explanation:
Why are bacteria needed in the nitrogen cycle?
Other living things cannot use atmospheric nitrogen.
Other living things cannot use the nitrogen in plants.
Bacteria are the main nitrogen reservoir.
Bacteria are the main nitrogen transporters.
Answer:
Other living things cannot use atmospheric nitrogen
Bacteria helps nitrogen change its states
Answer:
The answer is A) Other living things cannot use atmospheric nitrogen.
Explanation:
Edge 2022
What evolves according to natural selection?
a- The individual
b- The population
Answer:
b - The population
Explanation:
What are the structure and function of the cytoskeleton in a cell?
Answer:
The cytoskeleton of a cell is made up of a few key components:
microtubules
actin filaments
intermediate filaments
Those three components/structures help give the cell its shape, and organize its parts.
I hope I helped you, and a "Brainliest" is always appreciated! ☺
What are these two diagram structures?
Answer:
Hydrogen bond
Explanation:
Storing stem cells is not regulated by the U.S government the way that a drug or a surgical procedure is because it is a service that will be helpful for treatments not yet invented. Do you think such banks should be regulated, and if so, by whom and how?
Answer:
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Who invented the microscope and was the first person to describe cells?
Who was the first scientist to refer to cells in cork tissues?
Answer:
The cell was first discovered by Robert Hooke in 1665 using a microscope.
The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s.
Hooke had discovered plant cells -- more precisely, what Hooke saw were the cell walls in cork tissue. In fact, it was Hooke who coined the term "cells": the boxlike cells of cork reminded him of the cells of a monastery.
Answer:
1. Zacharias Janssen invented the microscope, while the first to describe cells was Robert Hooke
2. Robert Hooke was the first scientist to do so
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Answer:
An animal that eats dead animals or plants
Explanation:
A scavenger is literally defined as an animal that feeds on dead plant material or carrion which means decaying flesh of dead animals ( humans included)
Earlier this week, we learned that there are between 17-20 different species of
penguins. In order to investigate relationships between species, what evidence
should we investigate next?
DNA Comparisons (molecular similarities)
Fossil evidence
Structural Similarities
O Phylogenetic Tree
Answer:
I think structural similarities then fossil advice before DNA comparison
A student is observing an image of an object that could be a comet, meteoroid or asteroid. Which of the following questions
would BEST confirm that the object is a comet?
A. Does the object contain ice?
B. Does the object contain metals?
C. Where is the object found?
D. How big is the object?
Answer:
A does the object contain ice
Explanation:
The BEST question that would confirm that the object is a comet is "Does the object contain ice?" Hence the correct option is A.
What are comets?Comets are small, icy celestial bodies that originate from the Kuiper Belt and the Oort Cloud. As they approach the Sun, they heat up and release gas and dust in the form of a coma and a tail, which can be observed from Earth. Therefore, if the object contains ice, it is most likely a comet.
Meteoroids, on the other hand, are smaller rocks that travel through space, and asteroids are larger rocks that orbit the Sun between Mars and Jupiter. Neither meteoroids nor asteroids typically contain ice.
As for the other options, whether the object contains metals or how big it is does not provide enough information to determine whether it is a comet, asteroid, or meteoroid. And while the location of the object may provide some clues about its origin, it is not a definitive factor in determining whether it is a comet.
To know more about Comet:
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Studies indicate that acidification of the ocean by the absorption of carbon dioxide is harmful to virtually all marine life and ecosystems. The group most vulnerable to both warming and acidification would be the _________. View Available Hint(s) Studies indicate that acidification of the ocean by the absorption of carbon dioxide is harmful to virtually all marine life and ecosystems. The group most vulnerable to both warming and acidification would be the _________. marine mammals krill and other zooplankton reef corals and other calcareous organisms benthic crustaceans pelagic fishes
Answer:
The correct answer is - reef corals and other calcareous organisms.
Explanation:
Acidification of the ocean is the continuous uptake of carbon dioxide from the atmosphere and reducing the pH of the water of the ocean. The acidification and warmth due to increasing the carbon dioxide in water cause harmful effects on the life of all marine life.
It affects coral reefs and other calcareous organisms as well as other organisms. These calcareous organisms required more efficiency to repair their cells or have to thickening of layers to survive in case of acidification of the ocean or to
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Answer:
Perpendicular, Option b
Explanation:
Sorry if it is wrong
Which of the following is the role of fossil fuels in the carbon cycle?
O A. Preserving extinct organisms
B. Building up carbon dioxide in the air
C. Keeping populations of plants under control
D. Storing excess carbon underground
Answer:
D have a nice day:
can racial categories be determined by biological traits?
Choose all the answers that apply. The hypothalamus _______
Answer:
A. The anterior pituitary is also known as the adenohypophysis.
C. The anterior pituitary is stimulated by the hypothalamus via hormones that travel through the hypophyseal portal system.
D. Oxytocin is secreted by the anterior pituitary.
Explanation: