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horsena [70]
2 years ago
13

16. The genetic variation that leads to evolution can occur when genes from

Biology
2 answers:
worty [1.4K]2 years ago
8 0
I think it’s B because when genes are introduced to each other they go through a phase that’s known as recombination and DNA exchange paired with each other they swap when they cross over
Art [367]2 years ago
6 0
C. natural selection
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There are varying levels of light in the ocean. Research and describe any one adaptation that helps ocean organisms to stay near
Fantom [35]

Answer:

sunlight entering the water may travel about 1,000 meters (3,280 feet) into the ocean under the right conditions, but there is rarely any significant light beyond 200 meters (656 feet). The ocean is divided into three zones based on depth and light level. The upper 200 meters (656 feet) of the ocean is called the euphotic, or "sunlight," zone.

Explanation:

hope this helps

5 0
2 years ago
Animals have two major types: _____.
Pachacha [2.7K]
B. vertebrates and invertebrates. 
3 0
3 years ago
Read 2 more answers
Which organelle is found in both plants and animals:
MrMuchimi

Answer:

The correct answer is E. The organelle that is found in both plants and animals is the Mitochondria.

Explanation:

Mitochondria are cellular organelles responsible for supplying most of the energy necessary for cellular activity (cellular respiration). They act as energy plants of the cell and synthesize ATP at the expense of metabolic fuels (glucose, fatty acids and amino acids). The mitochondria has an outer membrane permeable to ions, metabolites and many polypeptides. This is because it contains proteins that form pores called porins or VDAC (voltage-dependent anionic channel), which allow the passage of molecules up to 10 kDa of mass and an approximate diameter of 2 nm.

8 0
3 years ago
Why are so many eggs produced by invertebrates?
klasskru [66]
An egg is the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own, at which point the animal hatches. An egg results from fertilization of an ovum. Most arthropods, vertebrates, and mollusks lay eggs, although some do not, such as scorpions and most mammals.

Reptile eggs, bird eggs, and monotreme eggs are laid out of water, and are surrounded by a protective shell, either flexible or inflexible. Eggs laid on land or in nests are usually kept within a favorable temperature range (warm) while the embryo grows. When the embryo is adequately developed it hatches, i.e. breaks out of the egg's shell. Some embryos have a temporary egg tooth with which to crack, pip, or break the eggshell or covering.
7 0
3 years ago
Ecotourism ________. Select one: a. is a reasonable option only in impoverished countries b. decreases biodiversity by selling s
Elenna [48]

Ecotourism

d. increases biodiversity by providing income to areas that might otherwise be destroyed

Explanation:

Ecotourism refers to visiting of  undisturbed natural areas.

Ecotourism  is different from other tourism on the fact that it does not involve visit to an area which is  maintained by humans.

Ecotourists spots are allowed to grow naturally so that they can drag people who really want to enjoy the nature.

Ecotourist spots are protected areas and taxes are levied on them.  

Ecotourist spots call for tourists and gives native people ,a way of earning.

This forces the people to maintain these spots and hence biodiversity is conserved.

8 0
3 years ago
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