Answer:
c. The founder of the modern environmental movement and author of Silent Spring is Rachel Carson
d. Deciduous trees such as most pines do not lose their leaves/foliage in winter.
Explanation:
Yes, Rachel Carson is the founder of the modern environmental movement as well as author of Silent Spring. She was an American marine biologist, author, and conservationist which started the modern environmental movement in order to save the environment form pollution. Yes, the Deciduous trees such as most pines do not lose their leaves/foliage in winter, they only lose those leaves that are too old. They are considered as evergreen plants.
What are two ways in which white blood cells fight pathogens that have entered the body?
Answer:
They release anti-toxins, which neutralise effect of toxins produced by bacteria
They destroy pathogens is by engulfing/ingesting them.
A eukaryote is a cell with a nucleus and membrane-bound organelles.
O True
O False
Answer:
True
Step by step explanation:
What force powers the transport of eroded material?
A. Nuclear
B. Electromagnetism
C. Gravity
D. Radiation
hurry!
Answer:
Gravity
Explanation:
Mountains crumble. Erosion goes down hill.
Different types, or isotopes, of oxygen exist in the ocean and are incorporated into the skeletal fragments of animals. What can the ratio of preserved isotopes tell us about climate?
Answer:
The correct answer is - Certain ratios of oxygen reflect either warmer or cooler ocean temperatures.
Explanation:
Ocean have different isotypes or types of oxygen throughout the ocean and also incorporated in the shells of the marine animals of the particular region and time.
We can found out the climate and more particularly the temperature of the ocean as The more 18^O found in the shell or sediment of the animal, the colder the climate and vice versa, however, it is opposite in relation to that of glacier ice.
Which layer of Earth experiences the least amount of pressure?
crust
mantle
outer core
inner core
Answer:
The Answer is Crust
Explanation:
Letter A
Which of the following is NOT part of the circulatory system?
lungs
heart
arteries
blood
An amoeba is a single-celled organism that feeds on algae, plant cells, and bacteria. When an amoeba feeds, it first makes contact with the food particle. Next, the amoeba starts to surround the particle. Once the particle is completely engulfed, it is surrounded by a layer of the amoeba's membrane, forming a vesicle. The pH in the vesicle is then lowered and the contents are degraded.
What type of transport is involved in this process?
A.
endocytosis
B.
diffusion
C.
passive transport
D.
exocytosis
Answer:
A. endocytosis
Explanation:
Endocytosis is the type of transport that is involved in this process because it engulf the food material. Amoeba engulfs food particles with the help of its pseudopodia which are the projections of cell membranes. A food vacuole is formed around the food particle. This process of engulfing a matter by the projections of the cell membrane to form a vacuole is called endocytosis.
What happens when many water molecules come into contact with one another? Explain.
Answer:
When the oxygen atoms of different water molecules come together, they repel. When the hydrogen atoms of different water molecules come together, they repel.
Hope this helps
The function of the medulla oblongata is?
A) Vision
B) Hearing
C) Balance/Coordination
D) Basic body functions, heart functions, vomiting, swallowing.
Answer:
d. It also includes , breathing, digestion, swallowing
At each ______ foramen, the dura mater extends between adjacent vertebrae and fuses with the connective tissue layers that surround the ______.
Answer:
At each intervertebral foramen, the dura mater extends between adjacent vertebrae and fuses with the connective tissue layers that surround the spinal nerves.
Explanation:
The dura mater is the outermost meninge. It is around the spinal cord and the brain, and it protects these organs. In the spine, the dura mater extends between the intervertebral foramen. The intervertebral foramina are the areas between each vertebra that have spinal nerve projections. In these areas, the dura mater extends to seclude the space where the spinal cord is since it fusses with the tissue that is around each spinal nerve to stop the entrance of any pathogen to the spinal canal, which is the space that contains the spinal cord.
What is a limiting factor?
A. A factor in the ecosystem that causes population growth
to decrease.
B. A factor in the ecosystem that eliminates several
members of different species.
C. A factor in the ecosystem that targets one specific
species and greatly reduces their numbers.
Answer:
A
Explanation:
limiting factor is based on the predominant importance in restricting the size of a population
What is the main source of nutrients for autotrophs?
Answer:
Most autotrophs use a process called photosynthesis to make their food. In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose.
3. Which type of climate is characteristic of Antarctica?
A.humid mid-latitude
B.dry
C.polar
D.humid tropical
Complete a Punnett square for the cross-pollination of a female (TT) and a male (Tt). Write in the correct answers to complete the square.
Answer:
The correct answer is -
50% chances of Tt
50% chances of TT
Explanation:
In the given question it is given that there is a cross-pollination between a female (TT) and a male (Tt), which means female has two dominant copies of a trait in her genotype while the male is a heterozygous, the gametes of these genotypes will be:
gametes: T, t and T, T
then cross will be:
T T
T TT TT
t Tt Tt
Thus, the given result shows 1/2 TT and the rest 1/2 Tt by this Punnett square.
List out 3 caste of honey bees with their description
Answer:
There are three castes in honey bees:
dronesworkersqueens.Explanation:
There are three castes in honey bees:
Drones-Male honey bees are drones. The head and thorax of the drone are bigger than the females.Queens-Honey bee queens are the species' reproductive women.Workers-Workers' sweet bees are generally non-reproductive women.think about what you know about plant roots. how do plants absorb mineral salt from the soil?
Answer:
Plants absorb water from the soil by osmosis and they absorb mineral ions from the soil by active transport, against the concentration gradient.
THREE USES THAT CELLS MAKE OF THE ENERGY RELEASED BY ATP
Answer:
ATP provides the energy needed for many essential processes in organisms and cells. These include intracellular signaling, DNA and RNA synthesis, Purinergic signaling, synaptic signaling, active transport, and muscle contraction.
Explanation:
When you breathe, the pressure inside the lungs is different than the pressure outside the lungs. This is an example of a(n) __________. When you breathe, the pressure inside the lungs is different than the pressure outside the lungs. This is an example of a(n) __________. concentration gradient pressure gradient electrical gradient temperature gradient
Answer:
pressure gradient
Explanation:
The correct answer would be pressure gradient.
A pressure gradient is created when there is a difference in the amount of pressure between two points or locations that are adjacent to one another.
In this case, the two locations that are adjacent to one another are the inside and outside of the lung. When one breathes in, the pressure inside the lung is more than that of the outside and the lung expands as a result. When we breathe out, the pressure outside is more than that of the inside and the lung collapses.
Do you think it's possible for people to travel to the center of the planet? Why or why not?
what are the mechanisms that halophiles typically employ to grow in habitats with high concentrations of salt
Answer:
Synthesis Of Osmoprotectants
Explanation:
One Mechanism Halophiles use to survive in high concentrations of salt is the Synthesis Of Osmoprotectants, which are also known as compatible solutes. These work by balancing the internal osmotic pressure with the external osmotic pressure, making the two solutions isotonic, or close to it.
Based on the Punnett square, what is the phenotype of the offspring? Hh HH tall short Mark this and return
Answer:
tall
Explanation:
I took the test
someone help.......................................what are the economic importance of bacteria
Answer:
me
Explanation:
bcox help finish come me
Sort the steps of digestion in order from beginning to end.
- The stomach kills some bacteria and breaks food down into chyme.
- Nutrients from dissolved food are absorbed from the small intestine into the bloodstream.
- Water and nutrients are absorbed by the large intestine; chyme becomes waste matter.
- Saliva mixes with food and changes starches into sugars.
Saliva mixes with food and changes starches into sugars is the beginning step of the digestion.
What are the functions of saliva?Saliva is the medium that bathes the taste receptors in the oral cavity and in which aroma and taste compounds are released when food is eaten.
It is composed of water, mucus, proteins, mineral salts, and amylase. As saliva circulates in the mouth cavity it picks up food debris, bacterial cells, and white blood cells.
Saliva moistens the mouth for comfort, lubricates as you chew and swallow, and neutralizes harmful acids. It also kills germs and prevents bad breath, defends against tooth decay and gum disease, protects enamel, and speeds up wound healing.
Learn more about saliva:
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What are the different types of agar plates?
Answer: Blood Agar Plates, Nutrient Agar Plates,MacConkey Agar Plates,Bile esculin agar plates,Mannitol salt agar and Sabouraud dextrose agar
List the negative impacts of human activities on vegetation?
Answer:
Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.
Explanation:
The original pair of individuals involved in a cross is called
the _____?
Answer:
p generation
Explanation:
What is the main element that stars are made of?
Answer:
"Stars are made of very hot gas. This gas is mostly hydrogen and helium, which are the two lightest elements."
10.
Which statement best explains why cellular respiration in plants and other organisms is dependent on photosynthesis?
Answer:
Cellular respiration depends on two chemical reactants; glucose and oxygen. Glucose and oxygen are made available to plants and animals for cellular respiration thanks to photosynthesis. Photosynthesis is the chemical reaction that uses solar energy to convert water and carbon dioxide into glucose and oxygen. Without photosynthesis, the available glucose and oxygen on the planet would quickly deplete to the point that life could not be sustained on Earth. So the answer would be B :).
Explanation: Hope this helps and good luck :)!
Answer:
Since photosynthesis is the process whereby plant manufacture its own food using a sunlight, so respiration can happen because plant is alive
If we poke a plant and an animal cell ,which one of them would lose its shape?
Answer:
animal cell
Explanation:
hope this will help you
What would most likely happen to a native predator species if a nonnative predator species were introduced to an area?
A. The native species would force the nonnative species out of the community
B. The native species population would decrease because the nonnative species would be competing for food sources.
C. The native species population would increase because the nonnative species would introduce new food sources.
D. The native species would outcompete the nonnative species.
Answer:
B. The native species population would decrease because the nonnative species would be competing for food sources.
Explanation:
This question is describing the effect of invasive species. Invasive species are foreign species i.e. not native to a habitat or area, introduced into the area with the ability to outcompete and negatively affect the native species of that area.
Invasive species compete with the native species for food, space, mate etc., and tend to outgrow them. Hence, if a nonnative predator (invasive) species were introduced to an area, the native predator species in that area would decrease because the nonnative species would be competing for food sources.
